Fenix BT20 750 lumens Dual Distance Beam Cree LED 5 Mode Bike Bicycle Light with EdisonBright 4 bay Smart Battery Charger and 2 X EdisonBright EBR26 2600mAh 18650 rechargeable batteries bundle Dual Distance Beam system with Max 750 lumens Wide compatibility; Aerodynamic user-friendly design. Intelligent power indicator ; Helmet Mount Included Water resistance to IPX-6 standard; Operates on two 18650 or four CR123A batteries Bundle includes 2X EdisonBright EBR26 2600mAh 18650 rechargeable Batteries EdisonBright 4 bay Smart Battery Charger