Features: Safe and reliable, touch once and open. Can support up to 10 fingerprints recording. IP65 waterproof: With IPS65 waterproof standard, the product can be protected from the water and dust. USB chagre: With the feature of lower power and long standby time. A 300mAh lithium battery can support 2-year standby time and can be opened up to 2500 times. Suitable for house door, backpack, suitcase, warehouse, bike, cabinet and office.