NITEFIGHTER BT21 MTB Light
BT21 is a compact and high brightness mountain bike lights. A quantum leap in bike lights， resulting in an all-in-one illumination tool that combines high-output LED technology and variable lumen output. It also has a built-in strobe light， plus a gauge that tells you how much battery power is left. BT21 is the ideal illumination gear for mountain biking， touring， commuting， etc

Main Features:
● Compact size
52.8mm (width) x 24.5mm (depth) x 37.5mm (length) super tiny size makes it portable to carry around
● Power capacity indicator
4 color and 5 modes LED indicator displays remaining battery capacity， tell you when to replace batteries
● Thermal heat fins combined with a temperature sensor
Protects from over heat and maintains digitally regulated constant output brightness
● Neutral white LED chip
Utilizes two Cree XM-L2 neutral white LEDs， max 1800 lumens output
● Air-craft grade aluminum and premium type III hard anodized anti-abrasive finish
Absolutely satisfy with tough environment of MTB illumination
● IP-65 water-resistance
Be able to protect against water jets， no problems with the rain
● PMMA lens
Uses high quality PMMA optical lens to guarantee the great lighting effect even in long distance
● 5 Modes electronic switch
Low - mid - high - turbo - strobe
● Comes with Battery + Charger
Powered by four BAK 18650 rechargeable li-ion batteries， 7.4V 5200mAh， and our package comes with Battery + Charger for your convenient using
● Quick to attach and detach using O-ring mounting straps sized for 20 - 35mm handlebars
● Power capacity indicator
4 color and 5 modes LED indicator displays remaining battery capacity， tell you when to replace batteries


● Thermal heat fins combined with a temperature sensor
Protects from over heat and maintains digitally regulated constant output brightness


● Neutral white LED chip
Utilizes two Cree XM-L2 neutral white LEDs， max 1800 lumens output


● PMMA lens
Uses high quality PMMA optical lens with smooth beam