The speed sensor features Bluetooth function, ensuring a fast, accurate and table wireless connection with phones, or other devices.
The bluetooth speed sensor is easy to install and remove, saving time and labor.
The cycling speedometer is lightweight and compact, easy to store when not in use.
The bike speedometer features power-saving design, which is able to extend its work time.
The speed sensor comes with waterproof design, allowing to use in rainy or snowy weather.
Color: show as picture.
Battery: 2032 Button Battery.
Wireless Interface: Bluetooth.
Battery life:400 hour.
Replacement for Gemini210.
Because of the resolution of the screen, the color may be a little different.
There may be some errors in size due to the way of measurement.
1 * Speed Sensor.