The size, output, and battery versatility of the ProTac 1L-1AA (88061) makes it the perfect everyday carry light. At just over 4 inches, this super bright EDC fits in your pocket but doesn't compromise on brightness. It accepts a single lithium or alkaline battery, providing you with ultimate flexibility (and availability) in the field. Factory service and repair in Pennsylvania.Specifications and Features: 350 lumens and 160 meter beam on High Battery versatility - use alkaline or lithium Lightweight and compact TEN-TAP Programming to choose your preferred operating mode