Fangrui Product Details Fangrui Product Details ! Can Automatically Identify And Compatible With 24/36/48v Voltage. It Truly Reflects The Battery Power, Records The Power Consumption In Real Time, And Ensures The Riding Mileage. The Clear Setting Of The Individual Joints Facilitates Cost-effective Installation. When Connected To A Bike, The Product Displays A Lot Of Useful Data On Your Bike, Such As Ride Speed, Time, Power And Temperature. The Color Display On The Meter Makes It Easier To See The Data On The Panel. Applies To Protocol No. 2 Colour:black Material:plastic+metal Package Contents: 1 * Bicycle Instrument Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.