Overview: Model: Akoray K-109 Features a Cree XR-E Q2-WC LED emitter Powered by 1 x 3.0V/3.6V CR123A battery Voltage input range: 3.0V~4.2V6-Mode tail cap clicky switch with mode memory: Hi gt; Mid gt; Lo gt; SOS gt; Strobe gt; Special Tactical Police