The ETC Sarin 30 lumen rear light features multiple modes and convenient USB recharging.
Features
COB LED
Auto Light adjustment
Remaining Battery Display
Low Battery Safety Mode
Multiple Modes plus Memory Mode
Functions: High 30 Lumens, Mid 15 Lumens, low 5 Lumens, Flash 30 Lumens, Breathe Flash, Comet Flash, Intelligent Night, Intelligent Day
Battery:Lithium polymer 3.7v 500mAh