Features:
100% brand new and high quality
4 digital code, only the user can unlock.
Adopt micro-computer technique , have High - Middle-Lower sensitivity choose.
Quiver trigged, security and sensitivity .
Low power consumption to allow the battery a long life .
Easy to installation and DIY
After parking the bicycles, press "B" for 2 seconds, you will hear 1 beep if successful and it will armed 5 seconds after the beep.
When triggered the alarm will sound 5 times and if it is triggered again within 5 seconds it will sound for 15 seconds continuously.

Specifications:
Color: Black
Power: 6F22 9 V battery * 1( include)
Alarm decibel : more than 105db

Package includes:
1 x Bicycle alarm