Specifications: _x000D_ Product color: blue/black _x000D_ Product weight: 600g _x000D_ Product material: ABS plastic, metal alloy _x000D_ Packing size: 17.5cm*14cm*8cm Mold specifications: 50/48mm, 46/44mm, 42/40mm, 38/36mm, 34/33mm, 32/31mm, 30/28mm, 26/24mm, 23/21mm, 20/18mm. _x000D_ _x000D_ Instructions: _x000D_ 1. Choose a mold larger than the watch mirror and install it on the screw seat from under the pliers. _x000D_ 2. Choose another mold smaller than the back cover and install it on the upper clamp screw seat._x000D_ 3. Put a watch crystal on the lower mold, you can put a cloth under the watch mirror to protect the watch mirror._x000D_ 4. Put the back cover in a suitable position._x000D_ 5. Press gently to complete the capping.