Name: luminous hip hop hat
Size: Adjustable size luminous hip hop cap, cap around 56-61, allowing about 1 cm error Material: environmentally friendly plastic + acrylic Function: 1.5V (constant light - blinking - off), 3V normal (constant / slow flash / fast flash / off),
3V voice control (constant / flash / voice / off)
Power supply mode: 1.5V is powered by a 7-cell battery, which can last for 5-10 hours. The 3V regular model is powered by two 5th batteries and can last for 15-24 hours. The 3V voice control is powered by two 7-cell batteries and can last for about 10-15 hours.