Specifications:Mode:4 modesBrightness:15 lumensSize:Approx 7.5x3x2cm(L*W*H)Color: Red、white、blueWaterproof:YesRunning timeAlways light: 4 HoursStrobe: 8 HoursSlow: 10 HoursFast: 12 HoursCharging time:Approx2 hours