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This China-made professional watch case back opener features an adjustable wrench design with an opening range of 14-76mm, compatible with most round and polygonal screw-down waterproof watch case backs. Made of high-quality stainless steel (SUS 304/SUS 420), it easily opens hexagonal, polygonal, and notched case backs. It is an essential tool for watchmakers and DIY enthusiasts when replacing batteries, inspecting movements, or performing routine maintenance.
Adjustable opening range – 14-76mm fits most watch case backs
High-quality stainless steel – SUS 304/SUS 420 for durability and rust resistance
Multi-style compatibility – opens hexagonal, polygonal, and notched backs
Precision gripping – secure hold prevents slipping and case damage
Essential maintenance tool – ideal for battery replacement and movement inspection
Type: Adjustable case back opener / case wrench
Opening Range: 14 – 76 mm
Material: Stainless steel (SUS 304 / SUS 420)
Compatible Case Backs: Round, hexagonal, polygonal, notched screw-down types
Application: Battery replacement, movement inspection, routine maintenance
Condition: Brand new
Battery replacement – opening case backs for quartz watches
Movement inspection – accessing and examining mechanical movements
Routine maintenance – gasket replacement and case cleaning
DIY watch repair – for enthusiasts and hobbyists
1. Is this an original brand tool?
No, this is a China-made aftermarket tool, not from a specific brand. It offers reliable functionality at an affordable price.
2. What types of case backs can this tool open?
This tool can open round, hexagonal, polygonal, and notched screw-down case backs within the 14-76mm size range.
3. Will this tool scratch my watch case back?
When used properly with the correct adjustment, the precision-fit jaws minimize slipping and reduce the risk of scratches. For extra protection, we recommend placing a protective film over the case back before use.
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.
