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4 Lighting level modes, press button to change mode. Mode 1: Strong lighting mode. Mode 2: Half brightness mode. Mode 3: Slow flash mode. Mode 4: Strobe mode. There are four different lighting modes depending on your preference. Easy to mount and detach. USB rechargeable built-in Li-ion battery. IPX-5 waterproof. With charging indicator. Fits diameter 12-34mm seatpost. Horizontal or vertical installation. Up and down 45 degree angle adjustable. 140 dB bike horn ,very loud . 5 sound mode, long press the bell switch to change mode . You do not need to mount a independent bell on your handlebar . Save valuable space and money. The appropriate horn switch position design enables the horn switch to be close to the hand for convenient and safe use. Integrated solar panel,It automatically charges in the sun. Convenient .No need to charge it everyday . Environmental-friendly.Economical, save your money . Micro USB rechargeable .NEVER waste money on batteries again . With charging indicator , Indicating different charge states . Auto stop changing after full power . Built-in 2000 mAh rechargeable Li-ion battery. Strong lighting mode: Up to 2.5 hours of endurance. Half brightness mode: Up to 5 hours of endurance. Universal USB interface. Emergency charging for your cell phones and tail light. So your electronic device on the bike has a steady stream of solar energy .This feature is also useful when traveling or other outdoors sport. Lamp beads: T6 ultra bright LED. Ultra bright, 600ft effective range. Bring you no worries when water splashed on the led lights especially in heavy weather rain or snow. Durable and with excellent crush resistance. The front light and taillight are both waterproof . You can turn off the USB jack waterproof cover when it rains . Light perception control, automatically open and close according to the ambient light brightness. (light perception function indicator blue LED light when first click button, at this time, the ambient light detection function is on).







