DescriptionRunning and Hiking Compact and Lightweight Headlamp w/300 Lumens and USB Rechargeable BatteryWater ResistanceBattery / Burn Time4-13 hours. Rechargeable Battery (cable included)White Light- 5-20 hour burn time, Red Light- 10 hour burn time. Coin cell 2032 watch battery includedWhite Light: 5-20 hour burn time, Red Light: 10 hour burn time. Micro USB charging port (charging cable included)18650 3.7V (rechargable)Not included / Spot: 3-12 hour burn time, Flood: 5-10 hour burn time, Red: 8-12 hour burn time18650 3.7V (rechargable) / 4-8 hour burn timeTechnologyLow Weight, Fatigue Free, PerfectAngle, SteadybeamStable Ride - Low Weight - Fatigue Free - Perfect AngleSteady Beam - Low Weight - Fatigue Free - Perfect Angle - Stable Ride - Autocool - Widebeam - EnduralightWideBeam - Race Fit - Low Weight - Steady Beam - Stable Ride - Fatigue Free - Autocool - EnduraLight - Perfect AngleLow Weight - Fatigue Free - Enduralight - PerfectAngleRace Fit, Low Weight, Steady Beam, Stable Ride, Fatigue Free, AutoCool, Widebeam, EnduraLight, PerfectAngle Ultraspire Lumen 300 Sidekick Headlamp