Knog Big Cobber Tail Light

Produces an incredible 330º of light, so you'll be clearly seen from all angles
Output: 270 Lumens
Integrated USB Plug: No charging cable required, plugs directly into USB ports & is designed to be exposed to the elements
Charge Time: 4 hours (LED will turn off when fully charged)
Battery: USB Rechargeable Lithium Polymer
Light Modes: Max, Mid, Steady Pulse, Flash, Rolling Flash, Side Flash, Disco Flash, Eco Flash come pre-programmed.
LED's: Efficient Chip on Board (COB) LEDs designed to provide maximum brightness level for up to 90% of the battery burn time for each mode
Waterproof: The Cobber is 100% waterproof against all elements
Dimensions: 92mm x 33mm
Weight: 59g.
Bike Attachment: Tool-less removable silicone straps for bars/seat posts 22 - 32mm+ diameter with magnetic mount. Aero Mount also included
The large strap provided will fit tubes and head tube profiles of a maximum circumference/perimeter of 200mm
Included Accessories: Standard Mount, Aero Mount, 3x interchangeable straps for bars/seat posts 22-27mm / 28-32mm+, and USB extension