Description: This intelligent lock of your bike can hold securely with easy operation, you do not have to worry about losing the key of your bike, shell only with phone. Made of ABS plastic, it is durable and waterproof, and the cable is made of copper, hard and robust for safety. This lock works well for both iOS and Android system, suitable for most samrtphones. The anti-theft design is fabulous, anyone trying to damage the appearance would solve 105 dB alarm, loud enough to form the villain. You can check the remaining energy on your mobile phone and even if you forget the LED light would be LED light. LED Flashes when timely charge reminds. This is ideal for everyday use for bicycles, motorcycles, gates etc. Add it to your chart and live a safe life of today. Features: The bicycle U lock is made of ABS plastic and high density copper, which is sturdy and durable App control, works for both iOS and Android system and provides automatic and manual unlocking Anti-theft design, any attempt to damage the lock solves 105 dB alarm. This app control lock is suitable for bicycles, motorcycles, gates and etc. The power supply can be checked red light, flashes on the mobile phone and LED for the reminder of timely charging. Specification: Material: ABS plastic and copper Colour options: red, black, blue. Cable length: 80 cm / 31.49 inches. Cable diameter: 1 cm / 0.39 inches. Weight: approx. 311 g. Power supply: 3 x AAA batteries. Box contents: 1 x lock only. Known: 1. Three AAA batteries, two of the consumption on each day of acceptance, can last about 8 months for. 2. If the power is over 20%, the red light flashes when timely charging, over 10%, the lock cannot occur. 3. Put batteries, screw the battery cover, into the cable The bicycle U-lock is made of ABS plastic and high density copper, which is robust and durable App control, works for both iOS and Android system and provides automatic and manual unlocking Anti-theft design, every attempt to damage the lock releases 105 dB alarm This app control lock is suitable for bicycles, motorcycles, gates and etc The power supply can be checked, red light, flashes on the mobile phone and LED for timely charging reminder