Bergeon 7899-100 Ergonomic Screwdriver

Product Description

This is a genuine Bergeon 7899-100 ergonomic screwdriver, a Swiss-made precision tool featuring a 1.00 mm blade. The anodized aluminum shank provides a lightweight yet durable feel, while the ergonomic handle design reduces hand fatigue during extended use. As part of Bergeon‘s professional series, this screwdriver is essential for watchmakers and jewellers requiring precise torque control on delicate components .

Key Features & Functions

• Genuine Bergeon Swiss-made tool
• Blade diameter: 1.00 mm
• Anodized aluminum shank for lightweight durability
• Ergonomic handle for reduced hand fatigue
• Suitable for watchmaking, jewellery, and precision electronics
• Compatible with genuine Bergeon replacement blades
• Brand new in original packing

Usage Instructions

Proper Screwdriver Technique :

1. Grip: Hold the screwdriver between thumb and index finger, allowing the ergonomic handle to rest comfortably in your palm.

2. Blade Fit: Always select a blade that exactly matches the screw slot width. The blade should fill the entire slot without protruding.

3. Rotation: Turn the screwdriver using your thumb and middle finger while maintaining consistent downward pressure.

4. Force: Apply only light to moderate force. The precision-ground blade allows effective torque transfer without excessive pressure.

Blade Replacement :

The screwdriver features a set screw (grub screw) design for quick blade changes:

1. Loosen the set screw on the side of the handle

2. Pull out the old blade

3. Insert a new genuine Bergeon blade

4. Tighten the set screw securely

Important Notes

• Genuine Bergeon product – Swiss Made, brand new in original packing
• 1.00 mm blade – Ideal for medium-sized screws in watch movements
• Anodized aluminum shank – Lightweight and corrosion-resistant
• Replaceable blades – Extends tool life significantly
• Use genuine blades – Aftermarket blades may not fit or perform correctly
• Professional use – Designed for watchmakers and trained technicians

Maintenance Guide

After Each Use:

• Wipe the blade and handle with a soft, dry cloth

• Inspect the blade tip for wear, burrs, or damage

• Return the screwdriver to a stand or case to protect the blade

Blade Replacement:

• Blades are consumable items and should be replaced when worn

• Use genuine Bergeon replacement blades for optimal fit

• Replacement blades are available individually in sizes from 0.50mm to 3.00mm

Storage:

• Store screwdrivers in a dedicated stand or case

• Store in a dry environment to prevent corrosion

• Keep spare blades in original packaging to prevent loss

When to Replace the Blade:

• Blade tip is chipped or cracked

• Blade is bent or deformed

• Tip is worn down and no longer fits screw slots properly

Frequently Asked Questions

Q1: Is this a genuine Bergeon product?

A: Yes. The Bergeon 7899 series is manufactured in Switzerland and is part of Bergeon‘s professional ergonomic screwdriver line. This tool comes brand new in original Bergeon packing.

Q2: What is the blade diameter?

A: This screwdriver features a 1.00 mm blade, suitable for medium-sized screws commonly found in watch movements and precision instruments.

Q3: What is the shank made of?

A: The shank is made of anodized aluminum, which provides a lightweight yet durable feel and offers corrosion resistance for long-term use.

Q4: Can I replace the blade?

A: Yes. The blade is replaceable. Genuine Bergeon replacement blades are available for the 7899 series in various sizes, including 1.00mm, and are sold individually .

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 [email protected] or WhatsApp +86 18620212114.