1. USB-rechargeable lithium battery. The lock body features a small display and buttons to adjust time settings, with a maximum timer setting of 99 hours and 59 minutes. 2. Horizontal and vertical tensile strength (destructive pull test): 130 kg. Meets Grade 3 anti-fall standard (Grade 1 is highest, Grade 5 is lowest). 3. IPX4 water resistance rating — protects against rain and splashing water for outdoor use. 4. Battery life: up to 30 days with 4 hours of daily usage per full charge. 5. After 1,200 charge/discharge cycles, battery capacity retains 85% of original; after 3,000 cycles, runtime per charge reduces to approximately 3.5 hours. Dimensions: 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 Package includes: 2 x locks Note: Actual product color may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.