Wireless Bike Computer LCD Backlit Display Waterproof Bike Speedometer Odometer with Sensor LED Front Flashlight and Horn for Outdoor Cycling Green Item Type: Wireless Bike Computer Material: Plastic Weight: Approx. 274g/9.7oz Color: Green Product Size: Approx. 11x6x5cm/4.33x2.36x1.97in Computer Battery Type: 5V Lithium Battery x1 Computer Battery Capacity: 4000mAh (Shipped with Built in Battery) Sensor Battery Type: 3V 2032 Button Battery x1 Sensor Battery Capacity: 150mAh (Shipped with Built in Battery) LCD Screen: Yes Rubber Strip: Rubber Strip is Used to Hold the Meter Ring in Place, Wrap Around the Handlebar to Prevent Scratches, and to Hold the Wire Controller in Place Features: Total Mileage, Total Time, Current Time, Clock, Calories Burned, Hours, Current Mileage: km, Current Speed, Maximum Speed, Average Speed (km/h mph), Battery Display, Charge Indicator Light: Dual Head 800LM, 4 Gear Adjustable Speaker: 120dB 3 Sounds Additional Features: Independent Wire Control, Auto Backlight Waterproof Rating: IP4, Life Waterproof, Not Immersible How e: 1. Long Press The Power Button For 3 Seconds To Turn On The Device. The Bike Computer and Headlights Will Start Working. 2. Press The Power Button Again, The Single Light Bead Will Be Full Bright, And The Screen Headlight Icon Will Display The First Gear. 3. Press The Power Button Again, The Two Light Beads Will Be Full Bright. The Screen Headlight Icon Will Display The Second Gear. After 30 Seconds Of No Movement, The Brightness Will Decrease To 60%. Moving Will Return To Full Brightness. 4. Press The Power Button Again, The Two Light Beads Will Be 60% Bright, And The Screen Headlight Icon Will Display The Third Gear. 5. Press The Power Button Again, The Headlights Will Flash In Dual Mode, And The Screen Headlight Icon Will Display The Fourth Gear. 6. Press The Power Button Again To Turn Off The Lights While The Bike Computer Remains On. 7. In Any Gear, Long Press The Power Button For 3 Seconds To Turn Off The Bike Computer And Headlights, And The Screen Will Not Light Up. 8. When In The On State, If There Is No Movement For 4 Minutes, The Screen Will Enter Standby Mode, Displaying Only The Clock And Power. 9. During Charging, The Battery Display Will Show A Flowing Motion And A Sparkling Icon. 10. Long Press For 3 Seconds To Turn On/Off The Backlight. 11. Distance Traveled, Travel Time, Calories, Maximum Speed, And Average Speed Are Recorded Data For Each Ride. Please Turn Off The Device After Each Ride To Clear The Data. 12. Please Recharge The Battery When It Is Low. If The Power Supply Is Completely Depleted, Total Time And Total Dist Data May Be Lost. The Main Unit Will Return To Factory Mode And Need To Reset Parameters 13. Long Press The Setup Key And Mode Key For 10 Seconds, All The Numbers On The Display Will Light Up To Restore The Factory Setting 15. Extension Cord Control Setup Light Button, Can Be Used To Control The Light Gear, The Same Function As The Switch Button On The Main Body.