Feature:1. Rainproof and waterproof alarm lock can adapt to rainy weather, more durable and more useful.2. Wireless vibration alarm with infrared remote control, easy to operate and more efficient.3. The effective remote sensing distance and alarm terminal of more than 10m/32.8ft can be as long as 30m/98.4ft in open areas.4. Perfect to protect your bicycle and also helpful for other equippments, portable and lightweight.5. Made of high quality material that provides corrosion protection, wear resistance, and durability.Specification:Item Type: Bike Wireless LockMaterial: PlasticColor: As Picture ShownWeight: Approx. 105.0g/3.7ozLock Battery: 6F22 9V 210mAh (not included)Remote Control Battery: Button Battery LR1130 95mAh (included).Package List:1 x Alarm Lock4 x Screw2 x Nut1 x Manual1 x Remote Control 1 x Keychain