1. This is a smart fingerprint lock, which is small and portable, can be unlocked only by fingerprints, and is easy to use without keys. 2. Can store 10 fingerprints. Each small fingerprint padlock can store 10 fingerprints, the first two are administrator fingerprints, the indicator prompts to enter the fingerprints. 3. The material is strong and safe. Our fitness lock body is made of zinc alloy material with high hardness and high compressive strength. Zinc alloy metal body is seamlessly designed to prevent prying or crushing 4. Quickly unlock in 0.2 seconds. The fingerprint padlock with high-tech fingerprint sensor technology, bid farewell to cumbersome password combinations, your finger is the key, it only takes 0.2 seconds to unlock, no need to download any apps, no need to worry about forgetting the password or losing the key 5. Very suitable for housing rooms, gates, factory workshops, offices, bicycle electric vehicles, cabinet doors, backpacks, suitcases, file cabinets, student dormitories, staff lounges, hospital ward toolboxes, food delivery boxes, logistics express trucks, Lockers in public places such as takeaway vehicles. Specification: Model: M01 Battery capacity: 110mAh 3.7V Operating temperature: - 20 ~ + 70 Input power supply: DC 5V 200mA Working voltage: 3.0 ~ 4.2V Locking mode: fingerprint lock Status indicator: three color LED Number of stored fingerprints: 10 Charging time: 1-2 hours Charging interface: Micro-USB Locking times after full charge: 1000 Maximum standby time: 6 months Low power alarm: Red light flashes continuously for 6 seconds after unlocking Colour: Black Material: Zinc Alloy Package Contents: 1 x Fingerprint padlock 1 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.