RAVEMEN CL05 with Light Sensor
CL05 is a lightweight and easy-to-use rear light. Featuring two COB LED rings and a built-in light sensor, it provides max 30 LED lumens on warning flashing mode, great for busy night street commuting or city riding. With the flexible rubber strap mount and mounting clip, the light could be mounted to round and aero seatpost or clipped to some compatible saddle bags or backpacks directly.
For more, click: https://www.ravemen.com/CL/CL05.html