Sunlite LightRing USB Combo Light Black 8F/8R Combo Rubber Strap USB 240/100

USB rechargeable super bright COB style LED combo pack. 8 modes each: 4 brightness levels of both steady and flash. Charging and low battery indicator. Single button interface - quick press to change mode long press to turn off and double tap to change from steady to flashing. 3 hour charge time