Day and Night Visibility in a Compact Rear Light The PDW Daybot USB Tail Light is built to keep you visible around the clock, with dedicated day and night modes that match how you really ride. A CREE LED powers a 100 lumen Daytime Pulse setting that cuts through bright sun, while lower-output night modes conserve battery once the sun goes down. Simple, single-button control lets you switch between day and night banks of modes, and a redesigned mount works on both seatposts and seatstays. USB recharging and a fully weatherproof body make it an easy, low-maintenance choice for daily commuting and weekend rides alike. Design That Works Purpose-built daytime and nighttime modes so you can run a bright pulse in sun, then dial it back after dark CREE LED with 100 lumen Daytime Pulse mode for strong visibility in traffic Two mounting brackets included for seatpost or seatstay placement Mounts vertically or horizontally to fit different bikes and setups Single rubberized button controls power and mode selection; press and hold for on/off USB-rechargeable lithium polymer battery with long runtimes for all-week commuting Weatherproof exterior for year-round riding in rain and road spray Compact, lightweight design that is easy to move between bikes or slip into a pocket