Smart brake sensing: this tail light with high-lumen led shifts to high-brightness automatically upon braking, warning riders behind, improving cycling safety
Auto on/off: the rear light turns off automatically after thirty seconds of no movement, due to its motion sensor and light sensor, saving battery; it turns back on when touched or movement occurs; it turns off in daylight
Battery status: the smart taillight uses a 400 mah usb rechargeable battery, which allows it to run for up to fifty hours after a full charge; the blue indicator light flashes quickly to show that it needs charging
Aluminum alloy shell: crafted from cnc machined aluminum alloy, this rechargeable rear light has a delicate feel, good resistance to wear and shock, and delivers long-lasting use
Simple installation: saddle and seatpost brackets offer two easy ways to install the brake sensing light; fasten it to the bicycle's saddle with cable ties, or attach to the seatpost with rubber bands