Type: Sharing bike lock Material: Zinc alloy + ABS Color: Black APP system: IOS & Android Mode: Wireless Battery: 3.6 V 8000mA Lithium battery Life time of the battery: 2 years Feature 1: Vibrate sensor to Anti-theft alarm Feature 2: Unlock by scanning QR code Weight: 660g Diameter of the Slider: 9mm Waterproof: IP44 Show More