Pelican Products' 7100 and 7600 LED Tactical Lights both use a USB rechargeable lithium ion battery. At only five inches long, the Pelican 7100 LED flashlight is very compact yet provides nearly 700 lumens of intense light. It is equipped with a full time battery level indicator and can operate on a single AA disposable battery when power is not available. The six-inch Pelican 7600 LED provides more than 900 lumens of clear, brilliant white light and toggles to night-vision friendly red and green LEDs with the twist of a switch. The Pelican 7600 flashlight will operate on two disposable CR123 batteries if power is unavailable.