★ product material: ABS
★ product model: 4-01
★ external dimension: 115 * 45 * 26mm
★ large window size: 63 * 12mm
★ average wall thickness of the box is about 2mm
★ there are two No.7 battery compartments in the shell
★ product standard: upper cover * 1, bottom shell * 1, battery shrapnel
★ according to the customer's needs, we can cut holes, make colors and materials