Need more than 1? Choose the number of sets in the dropdown to receive a bulk buy discount up to 20% off Features: Bike Computer Set, Include A 350 Lumens Front Bike Light With Speedometer This Water-Resistant Bike Light And Bicycle Speedometer Comes With The Usb Rechargeable Function Front Bike Light, All You Need Is A Usb Cord And A Power Source To Recharge (Computer, Laptop Or A Mobile Phone Charger), Precise Measurement Adjustable For Viewing Total Distance, Maximum Speed, Average Speed, Cycling Time And One Way Record, Suitable For Outdoor Cycling Trip And Bicycle Training. Bright Screen Green Backlight Lcd Display With Digits Ensures Easy Reading. During Day And Night, Gently Touch On The Mode Or Set To Wake Up The Backlight Screen. This Bicycle Light Can Be Used As A Regular Flashlight For Hiking, Camping, Walking, Home Or Office Power Failure Emergency Flashlight, Night-Time Family/Kids Activities, Etc. Road Bicycles, Mountain Bikes, Folding Bikes, And Other Common Bicycles Are Compatible With This Bicycle Speedometer.Specifications: Colour: Blue Material And Process: Abs, Lightweight Speaker: 120 Db Brightness: 350 Lumens Charging Method: Usb Charging Battery Life: 3-5 Hours Gear: Strong-Weak-Flash-Flood Battery: Built-In Lithium Battery Product Size: 10.5*4.1Cm Weight: 100GThe Steps For Setting Up The Speedometer Step 1: Set The Unit --- Long Press The Button + And - Together, Then Press The Button - To Transform Between Km/H And M/H. Step 2: Set The Speedometer --- Press The Button+, Then The Number 208 Blinks On The Display, It Means The Default Wheel Size (The Circumference Of Just One Wheel), The Unit I