Your lights need to be smarter not brighter varia smart bike lights help to create a safer riding environment by adjusting to changing light conditions as well as bike speed when paired with select edge computers as ambient light fades or gets brighter tail light adjusts automatically when paired with a light sensing edge 1000 bike computer specification dimensions 38 cm x 92 cm x 17 cm weight 520 g modes solid flashing lumens 22 battery life high power mode 4 hours charge time