Sell Bicycle Cycling Waterproof Password Lock Mountain Bike Anti-Theft Alarm Lock best price

Characteristics: 4 digit password, only user can unlock.Microcomputer technology is used, with low sensitivity selection in high school.Trembling, safety and sensitivity.Low power consumption makes the battery long in life.Easy to installl and diy. Description: After parking, press "b" button for 2 seconds. if you succeed, you will hear 1 beep and the beep will be deployed in 5 seconds. After triggering, the alarm will ring 5 times, and if triggered again in 5 seconds, it will ring for 15 consecutive seconds. Specifications: Color: black Power supply: 6f22 9v battery x 1 (excluding) Alarm decibels: greater than 105db Packing includes: 1 x bicycle alarm