XTAR DIY mode 500LM 5mode Mini Flashlight WK21

ANSI Illumination levels:   Low         Mid        High        Strobe      SOS
Luminance:                       10Lm     210Lm     500Lm
Duration:                          40h        55mins      20mins 
Max Range : 70m
Max Intensity: 1225cd
Impact Resistance: 1m
Water Resistance: IPX-7 ( underwater 0.5m)
Bulb: CREE XM-L T6 LED
Crust Materials: Anodized aircraft 6061 aluminium alloy
Working Voltage: 2.75~4.2V
Battery: 16340
Switch: Head rotary switch
Size: Ø 25.6mm（Head dia）x Ø 24.0mm（Body dia）x 70.2mm（length）
Net Weight : 43g（Excluded battery）
Additional Functions: Memory function, Tail disassemble strong magnet

Optional accessories: MP2 charger, 600mAh 16340 rechargeable battery

WK21 Review:

1. http://www.candlepowerforums.com/vb/showthread.php?331972-Review-of-Xtar-Wk21-with-measurements-and-outdoor-beamshots

2. http://www.youtube.com/watch?v=J8vw6sDpuJU