XTAR Sport flashlight B20 Pilot
ANSI Illumination levels:   Turbo       High        Mid        Low     Signal
                                           1000Lm   600Lm   250Lm    30Lm   250Lm
Runtime:                             3.1h            3.3h      7.5h         70h     /
Max Range :              210m
Max Intensity:            11100cd
Impact Resistance:  1.5m
Waterproof:   IPX8
LED: CREE XM-L U3 LED
Crust Materials: Anodized aircraft 6N01 aluminum alloy, type III hard-anodized anti-abrasive finish
Working Voltage: 2.75-4.2V
Battery: 1*18650/18700
Tactical tail cap switch
Size: Φ34.5mm（Head dia）x Φ25.4mm（Body dia）x25.4mm(Tail Dia) x 140.0mm（length）
Net Weight :113.0g（Excluded batteries）
Additional Functions: Memory function, Hidden Signal mode

Features:
1. Use CREE XM-L U3 LED a lifespan of 50,000 hours
2. Simple mode arrangement: Turbo-High-Mid-Low-Signal
3. Super bright, max output could be 1000m
4. Beam throw could be 210m
5. Excellent heat dissipation design
6. Gold-plated spring, antioxidant and avoid poor contact
7. Excellent anodized aircraft 6N01 aluminum alloy plus premium Type III hard-anodized anti-abrasive finish.
8. Anti-roll, slip-resistant body design
9. Ultra-clear tempered glass lens with anti-reflective coating
10 Use 1*18650/18700 lithium battery

Tips:
■XTAR rated qualified batteries are recommended.
■When the B20 is not to be used for a prolonged period, it is recommended to remove the batteries.

B20 reviews:

http://forum.fonarevka.ru/showthread.php?t=17111

Reviewer's comment: It is portable enough for a large pocket and tiny enough to fit in any backpack. It performs beautifully as a bike light, and it’s resistant to the elements