5 color led arm band: width:2.5cm; circle perimeter: 32cmLED Color: Red,Orange,Yellow,Green,Blue,Pink,White MUTILCOLOR 8colors availablePacking: OPP ... CR2032 button battery60-80 hours, normal 2-3 months; battery can be replaced.The product has passed CE, ROHS, EN471 certification ... contact us with any question, we will offer you satisfying red Led flash arm band led sporting band led light band