This product only supports protocol 2.

Battery display
Motor power indication
Assistance gear adjustment and indication
Speed display (including real-time speed, maximum speed, average speed)
Mileage display (including single mileage and total mileage)

Helping to implement control and instructions
Headlight control and display
Error code display
USB connection
Colour:Black
Material:plastic
This product only supports protocol 2.

Package Contents:
1 x Ebike Display Meter

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.