--- description: Genuine Hattori YM62 circuit block for mecaquartz chronograph & alarm movements. Japanese-made OEM module. Direct replacement for faulty PCB. title: Hattori YM62 Circuit Block Electronic Module - Sofly image: https://www.soflypart.com/wp-content/uploads/2024/03/Hattori-YM92-circuit.jpg --- [Skip to content](#content) * [ Home ](https://www.soflypart.com "Home") * [Products](https://www.soflypart.com/shop/ "Products") * [Watch Parts](https://www.soflypart.com/product-category/watch-parts/ "Watch Parts") * [Watch Circuit & Coil](https://www.soflypart.com/product-category/watch-parts/circuit-and-coil/ "Watch Circuit & Coil") * **Hattori YM62 Circuit Block Electronic Module** [![Hattori YM62 Circuit Block](https://www.soflypart.com/wp-content/uploads/2024/03/Hattori-YM92-circuit.jpg)](https://www.soflypart.com/wp-content/uploads/2024/03/Hattori-YM92-circuit.jpg) # Hattori YM62 Circuit Block Electronic Module $6.50 You Saved | Brand | Choose an optionSEIKO![SEIKO](https://www.soflypart.com/wp-content/uploads/2023/06/42.jpg)[Clear](#) | | ----- | ---------------------------------------------------------------------------------------------------- | ### Discount | Quantity | Discount (%) | Price | | -------- | ------------ | ----- | | 1 - 4 | — | $6.50 | | 5 - 9 | 5 % | $6.18 | | 10+ | 10 % | $5.85 | ### Discount | Quantity | Discount (%) | Price | | -------- | ------------ | ----- | | 1 - 4 | — | $6.50 | | 5 - 9 | 5 % | $6.18 | | 10+ | 10 % | $5.85 | Hattori YM62 Circuit Block Electronic Module quantity Add to cart x [ Checkout ](https://www.soflypart.com/checkout/) * repair Covers 99% of Repair Needs * Wholesale Discounts * Fast Global Shipping * 24/7 Customer Support ## Product Description This is a genuine circuit block electronic module for the Hattori (Seiko Instruments Inc. / TMI) YM62 quartz movement, designed for the YM62 series multi‑function quartz chronograph calibers. As the movement‘s core electronic control unit, the module integrates a quartz oscillator and CMOS integrated circuit, generating a precise 32,768 Hz time base frequency to drive the stepper motor. It controls the precise operation of the central hour/minute hands, central chronograph seconds hand (1/5‑second steps), 60‑minute totalizer at 12:00, small running seconds at 9:00, alarm hour/minute hands at 6:00, and the date window at 3:00. The module also supports alarm and chronograph functions, making it the core component of a typical mecaquartz movement. As an original OEM replacement part, it provides a direct solution for repairing YM62 movement failures caused by water ingress, battery leakage, or aging electronic components. ## Key Features & Function * **Genuine Hattori / SII Part** – Japanese factory-original from Seiko Instruments Inc. (SII) / Hattori / TMI / Epson, not a copy, ensuring perfect fit for YM62 movements. * **Mecaquartz Hybrid Technology** – Combines quartz timekeeping with mechanical chronograph/alarm modules; the central chronograph seconds hand sweeps in 1/5‑second steps, providing mechanical‑like tactile feedback and visual performance. * **Full Chronograph Support** – Drives central chronograph seconds hand (1/5‑second steps), 60‑minute totalizer at 12:00, and small running seconds at 9:00, with timing capability up to 59 minutes 59 seconds. * **Alarm Function** – Features independent alarm hour/minute hands at 6:00, settable via the crown and chronograph buttons. When the alarm sounds, a piezoelectric buzzer emits an audible tone for up to 20 seconds; pressing either chrono button silences it. * **Calendar Function** – Date window at 3:00. * **High-Precision Time Base** – Integrated 32,768 Hz quartz oscillator with ±20 sec/month accuracy, providing a stable and reliable time reference. * **Hacking Seconds** – Crown pulls out to stop the seconds hand for precise time setting. * **Cost‑Effective Repair** – Replaces only the faulty circuit board instead of the entire movement, offering significant cost savings. ## Specifications | Parameter | Details | | --------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Part Name | Circuit Block / Electronic Module | | Compatible Movements | Hattori (SII / TMI / Epson) YM62, YM62A (same platform as Seiko 7T62) | | Movement Size | 12‴ × 10.5‴ (27.6 mm × 24.1 mm) | | Movement Thickness | 3.70 – 3.73 mm | | Overall Height (with hands) | Approx. 6.19 mm | | Frequency | 32,768 Hz | | Battery Type | 395 (SR927SW) | | Battery Life | Approx. 3 years | | Accuracy | ±20 seconds per month (under -5°C to +50°C) | | Jewels | 0 | | Hand Hole Sizes | Hour Ø1.10 mm / Minute Ø0.65 mm / Chrono & small seconds & alarm Ø0.20 mm | | Functions | Central hour/minute, central chronograph seconds (1/5‑sec steps), 60‑minute totalizer at 12:00, small seconds at 9:00, alarm hour/minute at 6:00, date at 3:00 | | Hacking Seconds | Yes (seconds hand stops when crown is pulled) | | Alarm Function | Yes (independent alarm hands + piezoelectric buzzer, silencable) | | Origin | Japan | ## Applications * Hattori YM62, YM62A series multi‑function quartz movements (commonly found in Seiko, Lorus, Pulsar, Jacques Lemans multi‑eye chronographs, and many microbrand / custom watches). * Repair of non‑running movements, faulty chronograph functions, non‑sounding alarm, non‑advancing date, or no pulse output after battery replacement. * Particularly suitable for failures caused by water ingress, battery leakage corroding the PCB, or aged electronic components. * Professional watch workshops, brand service centers, DIY watch enthusiasts. ## Frequently Asked Questions **1\. Is this a genuine Hattori / Seiko circuit board?** Yes. It is a Japanese factory-original part from Seiko Instruments Inc. (SII) / Hattori / TMI for YM62 series movements, not a third-party copy. **2\. What is the relationship between YM62 and Seiko 7T62?** YM62 and Seiko 7T62 are different branding of the same movement platform. 7T62 is the Seiko‑branded version, while YM62 is the OEM version sold under Hattori. Their circuit board modules are identical and fully interchangeable. **3\. How can I tell if the circuit board needs replacement?** Symptoms: the movement does not run with a fresh battery; no pulse output detected on a timing machine; chronograph functions are inoperative (non‑mechanical fault); alarm does not sound; date does not advance; visible corrosion on the PCB due to moisture or battery leakage. ## Why Choose SOFLY Watch Parts? * Fast worldwide shipping within 3 business days. * Competitive pricing on Seiko/Hattori calibers. * 3,000+ watch movements and parts in stock. * Trusted by watchmakers worldwide. * Personalized sourcing support via **info@soflypart.com** or WhatsApp **+86 18620212114**. ##### Our Popular Items [ ![Zenith El Primero 18.0240.4021 Crystal](https://www.soflypart.com/wp-content/uploads/2022/07/DSC09824.jpg) ](https://www.soflypart.com/product/generic-zenith-el-primero-chronomaster-02-0310-400-sapphire-crystal-29-85mm/) ### [Generic Zenith El Primero Chronomaster 02.0310.400 Sapphire Crystal 29.85mm 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Japanese-made OEM module. Direct replacement for faulty PCB.","sku":"330307187","category":"Watch Parts","mainEntityOfPage":{"@id":"https://www.soflypart.com/product/hattori-ym62-circuit-block-electronic-module/#webpage"},"image":[{"@type":"ImageObject","url":"https://www.soflypart.com/wp-content/uploads/2024/03/Hattori-YM92-circuit.jpg","height":"580","width":"580"}],"url":"https://www.soflypart.com/product/hattori-ym62-circuit-block-electronic-module/","productGroupID":"330307187","hasVariant":[{"@type":"Product","sku":"330307187","name":"Hattori YM62 Circuit Block Electronic Module - SEIKO","description":"Product Description This is a genuine circuit block electronic module for the Hattori (Seiko Instruments Inc. / TMI) YM62 quartz movement, designed for the YM62 series multi\u2011function quartz chronograph calibers. As the movement\u2018s core electronic control unit, the module integrates a quartz oscillator and CMOS integrated circuit, generating a precise 32,768 Hz time base frequency to drive the stepper motor. It controls the precise operation of the central hour/minute hands, central chronograph seconds hand (1/5\u2011second steps), 60\u2011minute totalizer at 12:00, small running seconds at 9:00, alarm hour/minute hands at 6:00, and the date window at 3:00. The module also supports alarm and chronograph functions, making it the core component of a typical mecaquartz movement. As an original OEM replacement part, it provides a direct solution for repairing YM62 movement failures caused by water ingress, battery leakage, or aging electronic components. Key Features & Function Genuine Hattori / SII Part\u00a0\u2013 Japanese factory-original from Seiko Instruments Inc. (SII) / Hattori / TMI / Epson, not a copy, ensuring perfect fit for YM62 movements. Mecaquartz Hybrid Technology\u00a0\u2013 Combines quartz timekeeping with mechanical chronograph/alarm modules; the central chronograph seconds hand sweeps in 1/5\u2011second steps, providing mechanical\u2011like tactile feedback and visual performance. Full Chronograph Support\u00a0\u2013 Drives central chronograph seconds hand (1/5\u2011second steps), 60\u2011minute totalizer at 12:00, and small running seconds at 9:00, with timing capability up to 59 minutes 59 seconds. Alarm Function\u00a0\u2013 Features independent alarm hour/minute hands at 6:00, settable via the crown and chronograph buttons. When the alarm sounds, a piezoelectric buzzer emits an audible tone for up to 20 seconds; pressing either chrono button silences it. Calendar Function\u00a0\u2013 Date window at 3:00. High-Precision Time Base\u00a0\u2013 Integrated 32,768 Hz quartz oscillator with \u00b120 sec/month accuracy, providing a stable and reliable time reference. Hacking Seconds\u00a0\u2013 Crown pulls out to stop the seconds hand for precise time setting. Cost\u2011Effective Repair\u00a0\u2013 Replaces only the faulty circuit board instead of the entire movement, offering significant cost savings. Specifications Parameter Details Part Name Circuit Block / Electronic Module Compatible Movements Hattori (SII / TMI / Epson) YM62, YM62A (same platform as Seiko 7T62) Movement Size 12\u2034 \u00d7 10.5\u2034 (27.6 mm \u00d7 24.1 mm) Movement Thickness 3.70 \u2013 3.73 mm Overall Height (with hands) Approx. 6.19 mm Frequency 32,768 Hz Battery Type 395 (SR927SW) Battery Life Approx. 3 years Accuracy \u00b120 seconds per month (under -5\u00b0C to +50\u00b0C) Jewels 0 Hand Hole Sizes Hour \u00d81.10 mm / Minute \u00d80.65 mm / Chrono & small seconds & alarm \u00d80.20 mm Functions Central hour/minute, central chronograph seconds (1/5\u2011sec steps), 60\u2011minute totalizer at 12:00, small seconds at 9:00, alarm hour/minute at 6:00, date at 3:00 Hacking Seconds Yes (seconds hand stops when crown is pulled) Alarm Function Yes (independent alarm hands + piezoelectric buzzer, silencable) Origin Japan Applications Hattori YM62, YM62A series multi\u2011function quartz movements (commonly found in Seiko, Lorus, Pulsar, Jacques Lemans multi\u2011eye chronographs, and many microbrand / custom watches). Repair of non\u2011running movements, faulty chronograph functions, non\u2011sounding alarm, non\u2011advancing date, or no pulse output after battery replacement. Particularly suitable for failures caused by water ingress, battery leakage corroding the PCB, or aged electronic components. Professional watch workshops, brand service centers, DIY watch enthusiasts. Frequently Asked Questions 1. Is this a genuine Hattori / Seiko circuit board? Yes. It is a Japanese factory-original part from Seiko Instruments Inc. (SII) / Hattori / TMI for YM62 series movements, not a third-party copy. 2. What is the relationship between YM62 and Seiko 7T62? YM62 and Seiko 7T62 are different branding of the same movement platform. 7T62 is the Seiko\u2011branded version, while YM62 is the OEM version sold under Hattori. Their circuit board modules are identical and fully interchangeable. 3. How can I tell if the circuit board needs replacement? Symptoms: the movement does not run with a fresh battery; no pulse output detected on a timing machine; chronograph functions are inoperative (non\u2011mechanical fault); alarm does not sound; date does not advance; visible corrosion on the PCB due to moisture or battery leakage. Why Choose SOFLY Watch Parts? Fast worldwide shipping within 3 business days. Competitive pricing on Seiko/Hattori calibers. 3,000+ watch movements and parts in stock. Trusted by watchmakers worldwide. Personalized sourcing support via\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","image":"https://www.soflypart.com/wp-content/uploads/2024/03/Hattori-YM92-circuit-150x150.jpg","offers":{"@type":"Offer","description":"Product Description This is a genuine circuit block electronic module for the Hattori (Seiko Instruments Inc. / TMI) YM62 quartz movement, designed for the YM62 series multi\u2011function quartz chronograph calibers. As the movement\u2018s core electronic control unit, the module integrates a quartz oscillator and CMOS integrated circuit, generating a precise 32,768 Hz time base frequency to drive the stepper motor. It controls the precise operation of the central hour/minute hands, central chronograph seconds hand (1/5\u2011second steps), 60\u2011minute totalizer at 12:00, small running seconds at 9:00, alarm hour/minute hands at 6:00, and the date window at 3:00. The module also supports alarm and chronograph functions, making it the core component of a typical mecaquartz movement. As an original OEM replacement part, it provides a direct solution for repairing YM62 movement failures caused by water ingress, battery leakage, or aging electronic components. Key Features & Function Genuine Hattori / SII Part\u00a0\u2013 Japanese factory-original from Seiko Instruments Inc. (SII) / Hattori / TMI / Epson, not a copy, ensuring perfect fit for YM62 movements. Mecaquartz Hybrid Technology\u00a0\u2013 Combines quartz timekeeping with mechanical chronograph/alarm modules; the central chronograph seconds hand sweeps in 1/5\u2011second steps, providing mechanical\u2011like tactile feedback and visual performance. Full Chronograph Support\u00a0\u2013 Drives central chronograph seconds hand (1/5\u2011second steps), 60\u2011minute totalizer at 12:00, and small running seconds at 9:00, with timing capability up to 59 minutes 59 seconds. Alarm Function\u00a0\u2013 Features independent alarm hour/minute hands at 6:00, settable via the crown and chronograph buttons. When the alarm sounds, a piezoelectric buzzer emits an audible tone for up to 20 seconds; pressing either chrono button silences it. Calendar Function\u00a0\u2013 Date window at 3:00. High-Precision Time Base\u00a0\u2013 Integrated 32,768 Hz quartz oscillator with \u00b120 sec/month accuracy, providing a stable and reliable time reference. Hacking Seconds\u00a0\u2013 Crown pulls out to stop the seconds hand for precise time setting. Cost\u2011Effective Repair\u00a0\u2013 Replaces only the faulty circuit board instead of the entire movement, offering significant cost savings. Specifications Parameter Details Part Name Circuit Block / Electronic Module Compatible Movements Hattori (SII / TMI / Epson) YM62, YM62A (same platform as Seiko 7T62) Movement Size 12\u2034 \u00d7 10.5\u2034 (27.6 mm \u00d7 24.1 mm) Movement Thickness 3.70 \u2013 3.73 mm Overall Height (with hands) Approx. 6.19 mm Frequency 32,768 Hz Battery Type 395 (SR927SW) Battery Life Approx. 3 years Accuracy \u00b120 seconds per month (under -5\u00b0C to +50\u00b0C) Jewels 0 Hand Hole Sizes Hour \u00d81.10 mm / Minute \u00d80.65 mm / Chrono & small seconds & alarm \u00d80.20 mm Functions Central hour/minute, central chronograph seconds (1/5\u2011sec steps), 60\u2011minute totalizer at 12:00, small seconds at 9:00, alarm hour/minute at 6:00, date at 3:00 Hacking Seconds Yes (seconds hand stops when crown is pulled) Alarm Function Yes (independent alarm hands + piezoelectric buzzer, silencable) Origin Japan Applications Hattori YM62, YM62A series multi\u2011function quartz movements (commonly found in Seiko, Lorus, Pulsar, Jacques Lemans multi\u2011eye chronographs, and many microbrand / custom watches). Repair of non\u2011running movements, faulty chronograph functions, non\u2011sounding alarm, non\u2011advancing date, or no pulse output after battery replacement. Particularly suitable for failures caused by water ingress, battery leakage corroding the PCB, or aged electronic components. Professional watch workshops, brand service centers, DIY watch enthusiasts. Frequently Asked Questions 1. Is this a genuine Hattori / Seiko circuit board? Yes. It is a Japanese factory-original part from Seiko Instruments Inc. (SII) / Hattori / TMI for YM62 series movements, not a third-party copy. 2. What is the relationship between YM62 and Seiko 7T62? YM62 and Seiko 7T62 are different branding of the same movement platform. 7T62 is the Seiko\u2011branded version, while YM62 is the OEM version sold under Hattori. Their circuit board modules are identical and fully interchangeable. 3. How can I tell if the circuit board needs replacement? Symptoms: the movement does not run with a fresh battery; no pulse output detected on a timing machine; chronograph functions are inoperative (non\u2011mechanical fault); alarm does not sound; date does not advance; visible corrosion on the PCB due to moisture or battery leakage. Why Choose SOFLY Watch Parts? Fast worldwide shipping within 3 business days. Competitive pricing on Seiko/Hattori calibers. 3,000+ watch movements and parts in stock. Trusted by watchmakers worldwide. Personalized sourcing support via\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","price":"6.5","priceCurrency":"USD","availability":"http://schema.org/InStock","itemCondition":"NewCondition","priceValidUntil":"2027-12-31","url":"https://www.soflypart.com/product/hattori-ym62-circuit-block-electronic-module/?attribute_pa_brand=brand-seiko"}}],"@id":"https://www.soflypart.com/product/hattori-ym62-circuit-block-electronic-module/#richSnippet"}]} ```