Battery type: Lithium-Ion
Light source: LED
Length: 76mm
Weight (inc. batteries): 205g
Includes batteries: Yes
Features: USB rechargeable, battery status indication, red rear light (constant or flashing), waterproof to 1 metre, downcast LED technology, dimming button (3 levels), pivoting head, rear-mounted battery pack, interchangeable covers (white, black & photoluminescent) 

ANSI Specifications  

Light output (lumens): 558 (high) 213 (Medium) 95 (low)
Beam distance: 127 metres
Beam intensity (candelas): 4060
Run time:2 hours (high) 3 hours (medium) 7.5 hours (low)