ROCKBROS Q5 rear light. Explaining the 4 modes

Rockbros Q5 Smart rear light with Saddle and Seatpost holder
1.Full 6061 Aluminium alloy chassis. 2.Automatically turn on/off depending on the light intensity and motion.
3.Automatically switch to sleep mode to save power.
4.Seat rail mounting
5.4 flash modes.
6.20hrs+ run time.
7.400mAh Li-ion re-chargeable battery.
8.USB charging.
9.Battery indicator ( flashes every 6 seconds) 10.Compact and Light weight design
11.IPx6 Water proof.
12.Output: 60 Lumen Install method: Saddle / Seatpost Weight: Aprox 55g (include holder) Physical size: 40*34*34 mm
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