1. USB lithium battery charging. The lock body has a display and buttons Compatible with increasing hours and minutes. The maximum time is 99 hours and 59 minutes. 2. Horizontal and vertical grip (destructive grip) 130 kg fall protection level (maximum level 1 and lowest level 5) 3. Waterproof class four, Compatible with prevents rain and splashes outdoors; 4. Use 4 hours a day, 30 days battery life on a single charge 5. After 1200 times of charging and discharging, the battery capacity decreases by 15%; after 3000 times, each charge only lasts for three and a half hours. Size: 46 x 40 x 20 mm Wire rope length 90 mm; diameter 2.5 mm Wire rope head diameter: 4 mm Material: ABS + metal Color: black Compatible with package content: 1 x Lock Only the above Compatible with package content, other products are not included. Note: Light shots and different displays may cause the color of the product in the picture to differ slightly from the real item. The allowed measurement error is +/- 1-3 cm.