1. USB rechargeable lithium battery. The lock body features a small display and buttons to adjust hours and minutes. Maximum timer setting: 99 hours and 59 minutes. 2. Horizontal and vertical tensile strength (destructive pull test): 130 kg. Meets Grade 3 anti-fall standard (Grade 1 = highest, Grade 5 = lowest). 3. IPX4 water resistance — protects against rain and splashing water. 4. Battery life: up to 30 days with 4 hours of daily use per charge. 5. After 1,200 charge/discharge cycles, battery capacity reduces by 15%; after 3,000 cycles, runtime per charge is approximately 3.5 hours. Dimensions: 46 × 40 × 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 × locks Note: Actual product color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.