Product Description: Applicable gift occasions: opening ceremony, birthdays, awards commemoration, weddings, business gifts, advertising promotions, anniversary celebrations, public relations planning, fairs, festivals, employee benefits. Features: - Bluetooth V4.2 music call stereo, effective range, intelligent compatibility, volume addition and subtraction, arbitrary switching. - Hide the earloop. Hide the earphone design, arrange the earphone cable properly, and don't cause troubles caused by the mess, making it more convenient for you to wear. - Bluetooth is easy to disassemble, Bluetooth module can be removed separately, cleaning the hat, simple and convenient, wear more intimate! - In the off state, press and hold for 3 seconds to turn on; in the power-on state, press and hold for 3 seconds to turn off. - The size of the hat is adequate, men and women, in general, can use the head circumference, and the back is adhesive, suitable for the needs of different people! Specification: - Material: Cotton - Package Size: 19x4x23cm Package includes: 1 x Music Hat 1 x Headphones 1 x USB charging cable Note: 1. Size may be a little deviation due to manual measurement. What's in the box 1 x Music Hat 1 x Headphones 1 x USB charging cable