The ATAC™ A1 Tactical Flashlight is the best blend of compact design and low cost power source. Powered by (1) AA battery the ATAC™ A1 Tactical Flashlight throws a brilliant 103 ANSI FL1 Lumens of light in a smooth tactical beam pattern while providing 50 minutes of runtime on (HIGH) and 28 hours of runtime on (LOW). The tactical intelligent switch is designed to silently cycle through all 3 light modes (High/Low/Strobe) using only the Momentary-On function to prevent the "Click" sound from potentially giving up your location. Another tactical feature developed by professionals for professionals is the Break-Away Lanyard designed to free your arm from the flashlight in the event of an emergency. Compatible with the 53144 - ATAC™ Belt Clip/Holster Accessory •Aerospace Grade Aluminum •(1) AA Duracell® Battery Included •Regulated Circuit for Maximum Output •Cree® XP-E LED •Gold Plated Contacts •Intelligent Switch w. High/Low/Strobe •Momentary-On Switch •Stamped Metal Pocket Clip •Black TPR Soft Touch Anti-Roll Ring •Break-Away Lanyard Included •Water Resistant Construction •Length: 4.2" (106.6mm) •Max. Diameter: 1.1" (26.9mm) •Body Diameter: 1.0" (24.3mm) •Product Weight: 2.2oz (63g) •Weight w. Battery: 3.1oz (87g)