3. Domestic Waterproofing: IP67 grade waterproofing, fearless of wind and rain outdoors. IP67 level protection, zinc alloy lock head, not easy to rust, preventing rainwater and dust from entering the lock body, fearless of wind and rain; The fingerprint is equipped with a sliding dust cover to prevent dust and rainwater from entering 1. Multiple Unlocking Methods: 3 convenient and fast unlocking methods: TTLock APP, fingerprint, and emergency mechanical key. Supports fast unlocking of semiconductor fingerprint recognition, remote unlocking of mobile phone Bluetooth-compatible connection TTLock APP, and emergency mechanical key unlocking (in case of device malfunction or power outage) 2. High Quality Material: High quality zinc alloy lock head with sturdy structure to prevent illegal unlocking. Strong load-bearing capacity; Thickening and hardening, locking design to prevent external damage from others 4. Long Battery Life: Type-C emergency charging port, when you use it, prompts for insufficient battery charging, providing emergency power supply ; Built in rechargeable lithium battery, Low-power electronics, intelligent power saving, extended battery life, Weight: 1.1464037624 Pounds, Manufacturer: Wesafrae