Fashionable Autumn & Winter Warm Cashmere Hat w/ Bluetooth Function Smart Talking Keep Warm Music Beanie Hat w/Built-in Wireless Bluetooth Stereo Headphones Features: Material: Cashmere Color: Black, Gray Bluetooth Version: V3.0 Operating Range: 10M Bluetooth V3.0+EDR Compatible with most devices with Bluetooth function Knitted material, fashionable and keep you warm while you answer the phone in cold weather Washable Built-in MIC Built-in rechargeable battery Frequency: 2.402GHz-2.480GHz Transmission distance of MIC: ¡Ü1 M Li-ion Battery: 3.7V/100mAh Charging time: 2 hours Standby time: 6~8 hours Continuous working time: Approx. 3.5 hours Dimensions: 3.94 in x 3.94 in x 1.18 in (10 cm x 10 cm x 3 cm) Weight: 4.23 oz (120 g) Superior stereo audio quality, Convenient and comfortable,no more dangling wires You will look great and keep warm while listening to your favorite music You can receive the coming call by hat in cold winter Keep the sound track to your life playing all the time Hookes up directly by Bluetooth to your cellphones or tablets Built-in an easy to re-charge battery Perfect for traveling, waiting for the bus, jogs in the cold or just rocking out in your bedroom The beanie is made of a tight knit to keep you toasty on a chilly day. Support water wash after take out the earphone Can last using for 5 hours Packing List 1 x Hat 1 x USB data cable