The Rapid X3 Tail Light features 150 Lumens max rating, USB charging, 6 use modes that allow you to find the right balance of light and power usage, and will work most seatposts. At just 46 grams mounted, it won't slow you down, but may well save your life. It is rare to find a tail light with over 100 Lumens capability, and no doubt, in many situations, that is too bright. However, on a lonely dark road, when caught riding in a serious rainstorm, or in terrible urban conditions during the day, increased visibility is a great thing.

Cateye's electronics and construction are superior and the advanced COB (chips on board) LED lights are more durable to vibration and impact, take up less physical space, are lighter, and deliver steady, strong Lumen brightness. The compact design of the Rapid X3 belies it's capabilities and cleanly aligns behind round or aero seatposts, held in place by a sturdy rubber band. The backing of the light body is shaped and covered with rubber that prevents slippage and keep the light stable. One rubber panel is a flap that protects the micro USB charging port and is further secured from moisture penetration when the light is firmly mounted to a seatpost or stay. The mount system is designed for 15-32mm posts.

The Lithium Ion battery charges in 3 hours via USB 2.0, and Cateye provides the charging cable. Run times carry with desired run mode/brightness. The Battery Save mode will override your selection when power is running down. The light will revert to Flashing, the most efficient run mode. The overall light design gives excellent light in a 180° spread in every mode, and has light mode memory, so whatever mode it shuts off in will return when turned on. We highly recommend Cateye lights for their excellent construction and value measured in Lumen per dollar spent. The USB charged battery delivers consistent run times and saves from repeatedly replacing alkaline options. When brightness is at the top of your list, and you value you the money you spend on a tail light, the Cateye Rapid X3 is a top choice.