Ultra Portable XTAR WK21 DIY mode 500LM 5 mode LED Flashlight

WK21 Ultra Portable Waterproof LED Flashlight. Very small, but extremely bright for its size - 500 lumens.

This EDC Flashlight can be customized (DIY working modes). Magnetic tail, keychain, and side clip are very useful features.

Specifications:

• LED: CREE XM-L T6 LED
• ANSI Illumination levels:
• High: 500Lm, 20mins
• Mid: 210Lm, 55mins
• Low : 10Lm, 40hours
• Strobe, SOS modes
• Max Range : 70m
• Max Intensity: 1225cd
• Impact Resistance: 1m
• Water Resistance: IPX-7 ( underwater 0.5m)
• Body Material: Anodized aircraft 6061 aluminum alloy
• Working Voltage: 2.75~4.2V
• Battery: 16340 (RCR123) or CR123A
• Switch: Head rotary switch
• Size: 25.6mm (Head diameter) x 24.0mm (body diameter) x 70.2mm (length)
• Net Weight : 43g (excluding battery)
• Additional Functions: Memory function, Tail disassembles, strong magnet in the tail.

Highly recommended 16340 (RCR123) batteries-charger charging kit you can buy here

Independent reviews with photos, tests, and measurements you can read:

Here

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Here

and

Here

These reviews are from well respected technology review websites-forums.