Features: Wide range of applications: good anti-theft protection for bicycles. Vibrating alarm is applied to the vibrating alarm of bikes and motorcycles. You can also use it for door and window vibration sensors. Ultra Sensitive Movement: Adjust the sensitivity of level 7 by pressing or lightly pressing the 7 level sensitivity by touching or pressing the button to ensure the safety of your bike. Suitable for installation in a variety of environments. Long working time: compact and compact design, high quality wireless remote security alarm, connected by double-sided stickers or belt sticking. The alarm requires 3 AAA alkaline batteries (not included) for 8-10 months. Large Alarm Sound: The bicycle safety alarm can make a loud sound and attract people's attention. With a loud 113dB warning, you can effectively deter the thief. There are 6 types of 6 powerful sirens which let you quickly find your bike remotely. Customer Service: If you are not satisfied with the purchase of this product, please email us, we will give you a satisfactory solution. Features: Wireless range: 10-20 m. Working environment temperature: -20 ~ 60 C. The alarm requires 3 AAA alkaline batteries (not included) for 8-10 months. The remote control requires a 12 V / 27 A alkaline battery (included) for more than 1 year standby mode. Working environment: Storage temperature: -30 ~ 70 C. Contents: 1 bicycle alarm. 1 cable. 1 remote control.