Altitude: 850cd
Illumination: 8LUX/10M
Built-in lithium ion rechargeable battery (DC5V/500mA)
You can charge it without worrying about the memory effect.
Can be charged via computer USB port
Charging time: 2 - 3 hours.
Low battery, indicator
White LED: 2pcs
4 modes of high brightness, boost on, steady on, and flashing.
High Brightness: 1.5 hours, Boost On, 3 hours
Mounting Diameter: 0.7 - 1.2 inches (19 - 31.8 mm)