AGPtEK 3 LED CREE 2500 Lumens Waterproof Bike Cycling Bicycle Light Hand-Free Headlamp Headlight 4 Switch Mode with Rechargeable Battery/Charger for Camping Hiking Bicycling Riding Can be used as Headlamp or Bicycle Light Include 4 rechargeable 18650 batteries (one pack), Wall charger and Rubber ring for installation 4 Modes: Low Brightness/ Strong Brightness / Normal Brightness /strobe Waterproof: Impervious to rainfall, avoid submerging it in water. LED Life Span: around 50,000 hours