1. USB lithium battery charging. The lock body features a small display and buttons to set hours and minutes, with a maximum timer setting of 99 hours and 59 minutes. 2. Supports horizontal and vertical tensile force (destructive pulling) up to 130KG. Rated level 3 for anti-fall protection (scale from level 1 to 5, with level 5 being the highest). 3. Waterproof rating IP4, protects against outdoor rain and splashing water. 4. Battery lasts up to 30 days with typical usage of 4 hours per day on a single charge. 5. After 1200 charge and discharge cycles, battery capacity decreases by 15%. After 3000 cycles, runtime per charge is reduced to approximately 3.5 hours. Size: 46 x 40 x 20mm Wire rope length: 90mm; diameter: 2.5mm Wire rope head diameter: 4mm Material: ABS + metal Color: Black Package Contents: 1 x Lock Note: Light and display differences may cause slight color variations between the product image and actual item. Measurement may vary by +/- 1-3cm.