Product specification


Weight: 90g
Size: 41.5*100*21mm
Maximum Detection Distance: 140m (153 yards)

Viewing Angle: 220 degrees
Horizontal Detection Angle: 40 degrees
Detectable Targets Speed: 10-120 KM/H
Auto-sleep/Auto-wake: yes
Compatible Smartphone: Android 4.2 and above, IOS 8.2 and above
Charging Port: TYPE-C
Waterproof Grade: IPX6
Box Includes: W100 radar*1, mount*3, charging cable*1, specification*1

Working mode & battery life of our W100 bicycle radar tail light

1. Single radar mode (over 24 hours) : tail light off, radar on, loudspeaker off (Light is off when no coming vehicles. Light will flash while vehicles are approaching from behind and graphic of vehicle trajectory will display on smartphone APP and bike computer. Loudspeaker is off work)

2. Single taillight mode (over 24 hours) : tail light pulse flashing, radar off , loudspeaker off (Light keeps pulse flashing. Radar and loudspeaker are off work)

3. Solid mode (14 hours) : tail light always-on, radar on, loudspeaker off (Light keeps on. Light will flash while vehicles are approaching from behind and graphic of vehicle trajectory will display on smartphone APP and bike computer. Loudspeaker is off work)

4. Flash mode (18 hours) : tail light pulse flashing, radar on, loudspeaker on (Light keeps pulse flashing. Light will flash while vehicles are approaching from behind and graphic of vehicle trajectory will display on smartphone APP and bike computer. Loudspeaker rings. )

Standby mode : 3 months


W100 Radar Tail Light, an essentially early warning system .

Ride smarter and more aware with the W100 rearview radar. Mounted neatly on the seatpost, it provides visible and audible alerts for vehicles approaching from behind up to 153 yards (140 meters) away. Plus, the bright tail light is visible in daylight from up to a mile away, so you can ride with confidence and peace of mind.


Download the "Cycling Radar" app via scanning the QR code above or on the Apple app store or google market.

Pairing with smartphones or bike computers like Garmin Edge, the app provides graphic, tone and vibration alerts to indicate the position and speed of approaching vehicles.

W100 can connect your bike computer and smartphone simultaneously.