---
description: Bergeon 7662 key for opening waterproof watches. Polyamide shell, 16-52mm range, interchangeable hardened steel jaws. Includes 2819‑B set. Swiss‑made.
title: Bergeon 7662 Key Synthetic For Open Waterproof Watches - Sofly
image: https://www.soflypart.com/wp-content/uploads/2024/12/Bergeon-7662-Key-synthetic-for-open-waterproof-watches.jpg
---
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- **Bergeon 7662 Key Synthetic For Open Waterproof Watches**
[](https://www.soflypart.com/wp-content/uploads/2024/12/Bergeon-7662-Key-synthetic-for-open-waterproof-watches.jpg)
# Bergeon 7662 Key Synthetic For Open Waterproof Watches
$86.00
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## Product Description
The Bergeon 7662 is a professional key tool designed for opening waterproof watch case backs, featuring a polyamide PA12 shell for lightweight durability. Its interchangeable hardened steel jaws provide an opening diameter range from 16 mm to 52 mm, fitting most screw‑down case backs. The tool comes with one set of two jaws (ref. 2819‑B), with additional jaw sets (ref. 2819‑A, 2819‑C, 2819‑D) available separately for different watch brands and case back patterns. An ideal tool for watchmakers to safely open waterproof watches from brands such as Rolex, Omega, and others.
## Features & Function
- **Polyamide PA12 Shell** – Lightweight, high‑impact resistant, insulating and non‑slip.
- **Interchangeable Hardened Steel Jaws** – Durable and wear‑resistant; optional jaw sets for different case back patterns.
- **16–52 mm Opening Range** – Fits the vast majority of screw‑down case backs.
- **Basic Jaws Included** – Comes with one set of 2819‑B jaws (2 pieces) ready to use.
- **Swiss Bergeon Original** – Professional quality, precise and reliable.
## Specifications
| Parameter | Details |
| --- | --- |
| Model | Bergeon 7662 |
| Type | Waterproof watch case back opener |
| Shell Material | Polyamide PA12 |
| Opening Diameter Range | 16 mm – 52 mm |
| Jaw Material | Hardened steel (interchangeable) |
| Included Jaws | 1 set of 2819‑B (2 pieces) |
| Optional Jaws | 2819‑A / 2819‑C / 2819‑D |
| Origin | Switzerland |
## Applications
- Opening screw‑down case backs from Rolex, Omega, Longines, and other waterproof watches.
- Accessing the movement for battery replacement, service, or repair.
- Compatible with various case back patterns by using different jaw sets (e.g., Rolex‑specific, Omega‑specific patterns).
## Frequently Asked Questions
**1. Is this a genuine Bergeon tool?**
Yes. It is a Swiss Bergeon factory‑original model 7662, brand new.
**2. How do I choose the correct jaw set?**
2819‑B is a general set for most case backs. 2819‑A is for specific Rolex patterns; 2819‑C and 2819‑D are for Omega and others. Consult the seller based on your case back pattern.
**3. Is the 16‑52 mm opening range sufficient?**
It covers most watch case backs, including men‘s and ladies’ sizes. Very large pocket watch backs may require a larger tool.
**4. How do I change the jaws?**
Use the supplied screws or quick‑release mechanism to remove the old jaws, insert the new set, and tighten. Refer to the Bergeon manual.
**5. How do I maintain the tool?**
Keep the jaws clean and free of oil residue. Inspect for wear periodically. Wipe the shell with a soft cloth.
## 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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Its interchangeable hardened steel jaws provide an opening diameter range from 16 mm to 52 mm, fitting most screw\u2011down case backs. The tool comes with one set of two jaws (ref. 2819\u2011B), with additional jaw sets (ref. 2819\u2011A, 2819\u2011C, 2819\u2011D) available separately for different watch brands and case back patterns. An ideal tool for watchmakers to safely open waterproof watches from brands such as Rolex, Omega, and others. Features & Function Polyamide PA12 Shell\u00a0\u2013 Lightweight, high\u2011impact resistant, insulating and non\u2011slip. Interchangeable Hardened Steel Jaws\u00a0\u2013 Durable and wear\u2011resistant; optional jaw sets for different case back patterns. 16\u201352 mm Opening Range\u00a0\u2013 Fits the vast majority of screw\u2011down case backs. Basic Jaws Included\u00a0\u2013 Comes with one set of 2819\u2011B jaws (2 pieces) ready to use. Swiss Bergeon Original\u00a0\u2013 Professional quality, precise and reliable. 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Accessing the movement for battery replacement, service, or repair. Compatible with various case back patterns by using different jaw sets (e.g., Rolex\u2011specific, Omega\u2011specific patterns). Frequently Asked Questions 1. Is this a genuine Bergeon tool? Yes. It is a Swiss Bergeon factory\u2011original model 7662, brand new. 2. How do I choose the correct jaw set? 2819\u2011B is a general set for most case backs. 2819\u2011A is for specific Rolex patterns; 2819\u2011C and 2819\u2011D are for Omega and others. Consult the seller based on your case back pattern. 3. Is the 16\u201152 mm opening range sufficient? It covers most watch case backs, including men\u2018s and ladies\u2019 sizes. Very large pocket watch backs may require a larger tool. 4. How do I change the jaws? Use the supplied screws or quick\u2011release mechanism to remove the old jaws, insert the new set, and tighten. Refer to the Bergeon manual. 5. How do I maintain the tool? 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