DESCRIPTION: Charged to be seen! The TailLux 25 USB design features convenient cable-free charging with a direct USB port plug. Two super bright LEDs provide 25 lumens and three light modes, so you can be seen up to 2km away - even on the darkest nights. Bi-directional tool-free mounting and removal is accomplished by a single silicone strap making it simple to use on seatposts, seatstays or Topeak bags. (with included bag clip) MAX LUMINOUS INTENSITY 25 Lumens LAMP 2 super bright red LED’s BATTERY 3.7 V 320mAh Lithium Ion (integrated) CONTROL / BURN TIME (APPROX) 3 modes: 3 hr (High) / 30 hr (Low) / 40 hr (Blinking) CHARGE / CHARGE TIME APPROX USB port / 2 hr INPUT 5V 500mA LAMP HOUSING Engineering grade polymer STRAP MOUNT Fits aero or round seatposts (ø25.4 ø34.9mm), seatstay, and Topeak bags WATERPROOF IPX 6 SIZE 6.3 x 2.7 x 2.5 cm / 2.5” x 1.1” x 1” WEIGHT 30 g / 1.06 oz (w/ mounting clip) Includes pads for aero / round seatposts or seatstays Included mounting clip attaches easily to Topeak bags CABLE-FREE CHARGING: Simply plug light body directly into USB port for charging Visible Range 240°