Fangrui Product Details Protect Your Bike Or Electric Vehicle With This Usb Rechargeable Vibrating Alarm. The Waterproof And Design Ensures Ease Of Use And Reliability. With Remote Control And Anti-loss Safety Sensor, It Provides Enhanced Security For Your Vehicle. Worry About Leaving Your Bike Unattended! Made With High-quality Materials To The Safety Of Your Vehicle Function: Sensing Vibration, Host Alarm, Remote Control, Wireless Control, 3 Types Of Car Search Ringtones, Tipping Sos Prompt Principle: Vibration Sensor Senses Vibration, Wireless 433 Frequency Remote Control Battery: Three Remote Control Cr2032 Buttons For The 7th Battery Of The Host. One Button Is Included By Default And Shipped With A Detachable Battery Product Scope Of Use: Bicycles, Electric Vehicles, Motorcycles, Household Doors And , Etc. Inductive Vibration Triggered Alarm Anti-theft Manufacturer Wireless Remote Control Distance: 10-25 Meters, Open Space 80-100 Meters, Alarm Sound 113db Material: Abs Colour: Black Package Contents: 1 X Host 1 X R