【Internal compartment】: EVA cotton + pearl cotton compartment, the surface is flat and beautiful, easy to mark and write, strong bearing capacity, not easy to deform or shake, and protect the phone. 【Material】: thick aluminum alloy frame, stable and durable, strong sense of quality, ABS strip aluminum sheet, no rust, sun protection. 【Details】: Transparent window handle, easy to take, safety lock design, high-quality hardware lock, make your phone more secure. 【Portable】: Handle design, easy to take, easy to carry and easy to carry. 【Applicable scenes】: a good helper for key management, shops, hotels, schools, companies, warehouses, swimming pools and other scenes can all use the key management box with lock.