1. Keypad smart combination padlock, key-free design with customizable 6-digit passcode for quick unlocking. 2. Thickened hardened stainless-steel shackle, cut-resistant and anti-pry for reliable anti-theft protection. 3. Waterproof and rust-proof shell, works stably outdoors in rain and extreme temperatures. 4. Zinc-alloy & ABS construction, comfortable touch buttons and fine workmanship for long-term use. 5. Widely used for lockers, cabinet doors, luggage, warehouse gates, dorm doors and more.