Stainless steel shell (including box body, handle, ears, waterproof ring, plastic inner cover)
Case diameter: 40 mm (not including the crown) The ring mouth has a click sound when rotating in one direction, and the ring mouth size can be assembled with a size of 38mm-30.8mm
Crystal: Sapphire crystal
Inner cover material: plastic
Bare ear width: 20 mm
Thickness: 13.5mm
Waterproof: 3ATM (you can swim, but can't take a hot bath)
Applicable movement models: compatible with Swiss ETA2836, Japanese compatible with miyota 8215, 8205
China compatible with Pearl 2813, 3804 automatic mechanical movements.
Suitable for assembling 29.3mm-27.6mm dials
Can protect the watch movement, suitable for daily use.