Xeccon Geinea I 150 Lumen Super Bright Micro Red Rear Tail Light with SAMSUNG Battery BSS Very Compact and light weight, only 27mm and 23g!! Super bright 150 Lumen Red Tail Light, using Cree XP-E2 red LED! Any one of the four modes can be used in the day and night safety visibility! 2600mAh Samsung battery provides enough power for super long run time! Remote control for easy operation!!