OxyLED BL15 3-Mode Waterproof Bright Rechargeable 1500 Lumens Cree LED Headlight/Headlamp/Bicycle Light/Bike Light Set with 8800mAh Battery Pack and Charger Uses two Cree LEDs, lifespan &gt; 50000 hours Three brightness levels and Strobe mode to meet different needs Quick to install and release, no tools needed High-capacity rechargeable battery pack (Li-ion) to support long runtime IPX-6 wateproof---work normally in heavy rain