Amazon.com : https://www.amazon.com/gp/product/B01LZU2797?tag=eatingwelldia-20

ejoy ej0038 Wireless Bluetooth Smart Beanie Hat Musical Knit Headphone Speaker Hat with

Product Description :
V30edr Bluetooth version available for most of the Bluetooth device such as iPhone Samsung HTC nexus tablets
Built-in microphone available for cell phone to transmit the speaking phone to your audio devices directly
Built-in li-ion chargeable battery charge via USB cable and one size fits most and fully washable
The control panel built-in stereo speaker and microphone on the left earpiece allows you to skip back and forth through your playlist