MagicShine MJ808U XML U2 1100 Lumen LED Bike Light with MJ828 Battery Free Helmet Mount Kit

Mode: High (100%) - Low (50%) - Off (hold 2 seconds) - Strobe (hold 4 seconds)
Push and hold the switch for 2 seconds will turn off the light from any mode
5 Stage power meter: Green (75% - 100%), Blue (50% - 75%), Yellow (25%-50%), Red (10% - 25%), Flash red (less than 10%)
Light Source: Cree XM-L U2 Luminous
flux: Max 1100 Lumens (LED Emitter Rating.)
LED lifespan: 50,000+ hours
Shell material: 6061-T6 Aluminum alloy
Surface treatment: Type III hard-anodized anti-abrasive finish
Switch Type: Click switch
Battery: 4 x 18650 Li-ion LCD battery (8.4V 4.4 AH)
Runtime: 3.5 hours (100% brightness)
Battery life: 500 times cycle
Charging time: 3 - 3.5 hours
Waterproof grade: IP64
Size: 43 x 52 MM
Free Helmet mount and extension cable