Specification:Material: AcrylicColor: Black, Blue, Red, SilverSize: 22 x 20.5cmLight source: LEDLED quantity: 6pcBattery: Built-in lithium batteryCharge: Micro standard interfaceFeatures:Suitable for outdoor activies, like running, camping, caving etc.Keep your head warm, comfortable wearing and it is breathable to keep dry.Built-in 6LED head light, adjustable size according to your need.Easy to use, light turns on with the button.Easy charging, USB charging makes this hat incredibly easy and convenient to charge. Package included:1 x Sports 6 LED Beanie Knit Hat1 x USB Cable