The Seemee 100 V2.0 is a smart rear light that incorporates advanced sensors and enough power for your rides, day or night. Its clear optical technology offers a 260° beam of light with a maximum brightness of up to 100 lumens to ensure your safety at all times. Powerful lighting: 100 lumens of brightness. Total protection with 260° visibility. 5 modes: Low, High, Flash, Eco, Intelligent. Brighter when braking with motion sensor. Automatic adjustment with light sensor. Power saving mode for longer battery life. Easy assembly on saddle and seatposts. Memory, battery indicator and USB-C charging. IPX6 design, ultra-light and elegant.