1. Material: aluminum alloy
2. Scope of application: home, office, gym, factory, construction site, etc.
3. Large space, multi-function storage of keys, bank cards, U disks, SD cards
4. Strong and durable, safe and reliable
5. Dimensions: overall 85x40x117 mm, internal 65x90x33 mm
6. Weight: about 500 grams

Steps:
1. Open the combination lock key box
2. Flip the top switch inside the box
3. Pull up to unlock the lock and hang it on the door