Features:

• LED: Cree 7090-XP-E R5, life span up to 50000 hours
• Finish: HA Type Ⅲ
• Reflector: Aluminum alloy
• Max output level: 96 lumens
• Operating voltage: 0.9V - 3.0V
• Battery: 1 x AAA, 1 x Rechargeable NiMh AAA, or 1 x 10440 (Due to the small light body size,10440 batteries are not recommended since it may cause the light become hot very quickly.)
• Size: Length 66.5 mm *Diameter 14 mm,
• Weight: 9g (excluding battery and keychain), 17g(excluding battery)
• Upgrade Edition: Three output levels - Low 1.5 lumens (50 hours) ->Medium 18 lumens (4 hours) ->-High 96 lumens (55 minutes)

Operation:
Upgrade Edition: Tighten head to turn on,turn head counter clockwise (loosen) to turn off light. To switch modes, while light is on,turn light off and on within two seconds. Light will enter default low mode after two seconds of being off.