This well-designed bicycle alarm is easy to install and operate. The finely manufactured alarm has high sensitivity. It is sturdily constructed for a long service life.

• The alarm will produce a loud sound when someone tries to steal it.
• Electronic number lock with 4 digits. Safe and reliable.
• High sensitivity.
• 3 sensitivity adjustment levels.
• Built-in rechargeable lithium battery (3.6V) x 1.
• Battery life: 6 months (20 alarms/day), easy to charge.
• Reset key: useful when the code is forgotten. Easy to use.
• Alarm sound: 120dB.