Masar Watch Case Opener Knife - Watch Battery Changing Tool - 8.50mm Blade

Watch Battery and Case Opener Tool — 8.50 mm Lever-Operated Case Opener Knife

The watch battery and case opener is a lever-operated case opener designed to safely open snap-on case backs and replace batteries. Its wide 8.50 mm blade provides precise and stable leverage, ideal for servicing watches with snap-on case backs.

Main features

• Type: Manual lever can opener knife
• Blade width: 8.50 mm
• Use: battery replacement, bottom clip opening
• Color: orange for easy identification
• Dimensions: 8.2 cm × 3.6 cm × 1.8 cm

A practical and safe tool

Compact, ergonomic, and robust, this watch battery tool offers a stable grip and precise handling. Its wide blade ensures controlled opening without scratching or damaging the case, whether it's for a quartz, automatic, or vintage watch.

Instructions for use

1. Carefully insert the 8.5 mm blade into the slot in the clipped base.
2. Gently pry open the lid .
3. Replace the battery , then carefully close the bottom.

Usage tips

Work on a stable surface and use a protective plastic film to prevent scratches. This tool is designed for clip-on bottoms only (not screw-on).

Benefits

• Quick and secure opening of the watch case back
• Easy to use, even without experience
• Ergonomic and comfortable handle
• Ideal for replacing batteries and accumulators

In summary

This lever-operated case opener is the ideal tool for maintaining your watch batteries and timepieces. Thanks to its 8.50 mm blade, it combines precision, safety, and efficiency—an essential for watch enthusiasts and repairers.

Keywords: watch battery tool, watch battery tool, case opener knife, 8.5mm blade, snap-on case back, watchmaking, lever, watch repair.