Outdoor Rainproof Smart Wireless BT Bicycle Speaker Tail Light

Features:
2 functions in one: speaker and bicycle tail light.
Press the key twice quickly to start or shut down the BT.
Two patterns for start-up, one for indoor(white light), one for outdoor(red, green or blue light).
When riding bicycle at night, the light sensor will start up the alarm light automatically for reminding other people.
When you forget to turn off, the system detects no riding action and BT play, it will enter into dormancy.
The bicycle speaker tail light is rainproof, you can use it in the rain, but can not immerse it into water for long.