This lamp is suitable for installation of medium size seat post such as 25-27mm, and large diameter seat post is not suitable (buyers with large diameter seat post can also install other thin frames on the car), please pay attention when purchasing. When outdoors, you can insert it on the backpack, put it on the arm of the shelf, etc., the safety warning place, the effect is very ideal.

Packaging: English paper card blister packaging

bicycle dedicated anti-collision light, with 5 super bright LED inside,

bright appearance makes it easier to install batteries. You can unpack it with a dime.
Power supply: 2 7th batteries (note this model does not contain batteries, need battery purchase)

6 Light changing modes, quick release design, waterproof and shockproof, especially suitable for all-terrain bicycle and friends who often ride at night.