Description: Specifications BrandConvoyModelS2 ColorYellowMaterialAluminum AlloyLow Voltage WarningYesReverse Polarity ProtectionYesLens TypeAr Coated GlassLight Source519AColor Temperature3000K 4000K 5000K 5700KBattery T1 18650 Lithium Battery Not Included Size118mm Width 24 1mmWeight76g Mode Instruction 12 groups1 click the switch to turn the flashlight on off tap the switch to select mode2 if flashlight is turned on tap the switch 20 times quickly to enter into config mode On a visual interface as long as you click on an option it means that the option is selected The flashlight has no visual interface It flashes to represent an option and tap the switch in the flashing process means to select the option Option 1 normal flash 1 time buzz flash tap the switch to enter into sub option to select the mode group If the user has no operation the config mode will enter option 2 sub option 1 1 normal flash 1 time tap the switch to select mode group 1 0 1 1 10 35 100 strobe biking battery check sub option 1 2 normal flash 2 times tap the switch to select mode group 2 0 1 1 10 35 100 sub option 1 3 normal flash 3 times tap the switch to select mode group 3 100 35 10 1 0 1 sub option 1 4 normal flash 4 times tap the switch to select mode group 4 1 20 100 strobe biking battery check SOS sub option 1 5 normal flash 5 times tap the switch to select mode grou