Don't get carried away by this rear light's compact size. It has a shining power of 50 lumens visible for a few hundred meters. Trying to find a turn-on button? It's just in the middle of the light.
+ decent visibility due to the power of 50 lumens
+ choose the level of luminosity and shining / flashing mode
+ montage is easy with a durable silicone strap
+ rechargeable via USB
+ battery: lithium polymer 3.7 V/240 mAh, weight: 24 g, IPX5