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