OLIGHT S10R Baton Rechargeable Variable Output Side Switch LED Flashlight, Black Olight S10R (rechargeable S10) now Includes new Micro-USB charging dock and a Olight 650mAh RCR123A rechargeable battery NEW Low-profile side switch featuring a battery power indicator, which glows red when battery runs low NEW Thermal management safety program provides overheating protection by dropping high output by 50% after 4.5 minutes of constant on Automatically return to your last brightness level with the built in memory function; Removable two-position pocket clip Reverse polarity protection to prevent improper battery installation