---
description: Genuine ETA 2824/2834/2836-721 balance wheel for ETA 2824 family. Swiss-made complete balance assembly for automatic movement repair.
title: ETA 2824/2836 Movement Balance Wheel | ETA Movement Parts - Sofly
image: https://www.soflypart.com/wp-content/uploads/2019/06/28balance.jpg
---
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- **ETA 2824/2834/2836-721 Balance Wheel**
[](https://www.soflypart.com/wp-content/uploads/2019/06/28balance.jpg)
[](https://www.soflypart.com/wp-content/uploads/2019/06/28balanceb.jpg)
# ETA 2824/2834/2836-721 Balance Wheel
$53.00
You Saved
| Brand | Choose an option ETA- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $53.00 |
| 3 - 4 | 5% | $50.35 |
| 5 - 9 | 7% | $49.29 |
| 10 - 14 | 10% | $47.70 |
| 15+ | 15% | $45.05 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $53.00 |
| 3 - 4 | 5% | $50.35 |
| 5 - 9 | 7% | $49.29 |
| 10 - 14 | 10% | $47.70 |
| 15+ | 15% | $45.05 |
ETA 2824/2834/2836-721 Balance Wheel quantity
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## Product Description
The **ETA 2824/2834/2836-721 Balance Wheel** is a genuine Swiss-made component for the ETA 2824-2, 2834-2, and 2836-2 automatic movements. As the heart of the mechanical timepiece, the balance wheel is an oscillating component that, together with the hairspring, forms a harmonic oscillator regulating the gear train’s pace . This pre-assembled, **complete timed balance** (Article 23) includes the balance wheel, hairspring, and stud, and is essential for watchmakers restoring proper amplitude and rate accuracy when the original balance becomes damaged or worn. The ETA 2824-2 is a 25.6 mm automatic caliber introduced in 1982, widely regarded as one of the most robust and reliable mechanical movements in production .
## Features & Function
- **Genuine ETA part** – authentic Swiss-made, pre-assembled balance complete with hairspring and stud
- **Regulating system component** – controls the oscillation rate for accurate timekeeping
- **NIVAROX II balance** – anti-magnetic and temperature-compensated material for stable performance
- **Direct replacement** – drop-in replacement for worn or damaged balance assemblies
- **Precision-engineered** – manufactured to ETA’s original specifications
## Specifications
- **Part Number**: 2824/2834/2836-721 / 721
- **Article Number**: 23
- **Compatible Movements**: ETA 2824-2, 2834-2, 2836-2
- **Movement Diameter**: 25.6 mm (11½”’)
- **Movement Height**: 4.60 mm
- **Jewels**: 25
- **Frequency**: 28,800 vph (4 Hz)
- **Power Reserve**: \~38–42 hours
- **Balance Type**: NIVAROX II annular balance
- **Origin**: Switzerland (ETA factory part)
- **Condition**: Brand new
## Applications
- **Service and overhaul** of ETA 2824/2834/2836 family movements
- **Balance assembly replacement** – replacing damaged, broken, or worn balance wheels
- **Timekeeping restoration** – restoring correct amplitude and rate to the movement
- Suitable for **professional watchmakers** and **experienced repair technicians**
## FAQs
**1. Is this a genuine ETA part?**
Yes, this is a **genuine ETA factory part** (reference 2824/2834/2836-721), made in Switzerland. It is the factory-assembled and timed balance complete for the ETA 2824 family movements .
**2. Which movements is this balance wheel compatible with?**
This balance wheel is compatible with **ETA 2824-2, 2834-2, and 2836-2** movements, a 25.6 mm caliber family widely used in mid-range automatic watches from brands including Tudor, Breitling, and TAG Heuer.
**3. What is the function of the balance wheel?**
The balance wheel is part of the **regulating system** that controls the oscillation rate of the movement, ensuring accurate timekeeping and stable performance . It works together with the hairspring to form a harmonic oscillator that regulates the gear train’s pace .
## 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**.
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As the heart of the mechanical timepiece, the balance wheel is an oscillating component that, together with the hairspring, forms a harmonic oscillator regulating the gear train's pace\u00a0. This pre-assembled,\u00a0complete timed balance\u00a0(Article 23) includes the balance wheel, hairspring, and stud, and is essential for watchmakers restoring proper amplitude and rate accuracy when the original balance becomes damaged or worn. The ETA 2824-2 is a 25.6 mm automatic caliber introduced in 1982, widely regarded as one of the most robust and reliable mechanical movements in production\u00a0. 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The ETA 2824-2 is a 25.6 mm automatic caliber introduced in 1982, widely regarded as one of the most robust and reliable mechanical movements in production\u00a0. Features & Function Genuine ETA part\u00a0\u2013 authentic Swiss-made, pre-assembled balance complete with hairspring and stud Regulating system component\u00a0\u2013 controls the oscillation rate for accurate timekeeping NIVAROX II balance\u00a0\u2013 anti-magnetic and temperature-compensated material for stable performance\u00a0 Direct replacement\u00a0\u2013 drop-in replacement for worn or damaged balance assemblies Precision-engineered\u00a0\u2013 manufactured to ETA's original specifications Specifications Part Number: 2824/2834/2836-721 / 721 Article Number: 23\u00a0 Compatible Movements: ETA 2824-2, 2834-2, 2836-2 Movement Diameter: 25.6 mm (11\u00bd''')\u00a0 Movement Height: 4.60 mm\u00a0 Jewels: 25\u00a0 Frequency: 28,800 vph (4 Hz)\u00a0 Power Reserve: ~38\u201342 hours\u00a0 Balance Type: NIVAROX II annular balance\u00a0 Origin: Switzerland (ETA factory part) Condition: Brand new Applications Service and overhaul\u00a0of ETA 2824/2834/2836 family movements Balance assembly replacement\u00a0\u2013 replacing damaged, broken, or worn balance wheels Timekeeping restoration\u00a0\u2013 restoring correct amplitude and rate to the movement Suitable for\u00a0professional watchmakers\u00a0and\u00a0experienced repair technicians FAQs 1. 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