Come and see our amazing products. Knitted material, fashion and keep warm with answer the phone in winter. Built-in MIC, available for cell phone to transmit the speaking phone to your audio devices directly so that the user can hand free answering phone up via the device. Set-in Li-ion chargeable battery, charge via USB Cable, long stand-by time. Speakers can be taken off so that you can wash the hat. Customize this accessory by embroidering your company name and logo to benefit from regular brand exposure during every event! Pls confirm with us about the packing info, stock status and exact production time before placing your orders.