★ product material: ABS
★ product model: 4-04-1
★ external dimension: 135 * 70 * 24mm
★ large window size: 46 * 36mm
★ small square hole size: 23 * 3mm
★ average wall thickness of the box is about 2mm
★ there are two No.5 battery compartments in the shell
★ product standard: upper cover * 1, bottom shell * 1, screw * 4, battery shrapnel
★ according to the customer's needs, we can cut holes, make colors and materials