Watch case opener pliers

The watch case opener pliers allow you to cleanly open screw-down backs for routine maintenance: changing the batteries of quartz watches and accessing the automatic watch movement (adjustment, rotor check, gasket replacement). Adjustable jaws, secure grip and housing protection for clean work in the workshop and at home.

Watch case opener pliers — safe opening of screw-down cases

Adjustable jaws to fit many diameters, non-slip grip and fine adjustment of the gap to avoid any scratches. Ideal on grooved screw-on bottoms.

To change batteries (quartz watches)

1. Protect the case back and lugs (thin ribbon). Place the watch on a soft mat.
2. Adjust the jaw spacing in the notches, tighten without forcing, then unscrew.
3. Replace the battery with the identical reference (e.g. Renata 377), avoid touching the contacts.
4. Check and lightly grease the seal if necessary, then screw it back on until it is firmly seated.

For automatic watches

• Opening for rotor control , dust removal, or fine adjustment (advance/retardation).
• Avoid pressing on the rotor or balance wheel; use a bulb syringe to blow out dust.
• Check the gasket and replace it if marked. A leak test is recommended after closing.

Compatibility & Settings

• Fits grooved screw- on bottoms of many brands.
• Adjustable jaw spacing to cover multiple case diameters.
• If the tool accepts interchangeable jaws , choose the shape that fits the notches.

Safety tips

• Keep the tool flat, never force on a blocked base (gentle heating is possible to expand the screw thread).
• Avoid contact with glass and horns; work on a stable surface.
• After reassembly, check the water resistance if the watch is intended to be submerged.

Content & Service

• Contents: 1 × Case Opener Pliers .
• Need help with your battery reference or procedure? Our team will respond quickly.