Feature:

Multiple ventilation holes design, not afraid of heat;

Use 1.. Version 0 environmental protection rubber material, surface coated with glue coating, strong, light and comfortable, suitable for long-term wear;

Unlock the lock at a fixed time, no need to connect to the network, and automatically unlock the lock when the set time is reached;

The 6-speed adjustable snap ring, no matter whether your testis is large or small, it is very comfortable;

USB charging;

IPX6 Waterproof.