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Material: Wool Color: Yellow, Beige, Black Size: One Size Product Type: Bluetooth Music Hat Pattern: Solid Charging Voltage: DC 5V Bluetooth Version: V4.2 Frequency: 2.4026GHz-2.480GHz Transmission Distance: 10M Transmission Distance of Mic: ?1M Frequency Response?85dB Li-ion Battery: 3.7V/180mA Charging Time: 2 hours Quantity: 1pcs Features: Wool knitted material, warm, soft and stylish design. Built-in microphone, available for phone to transmit the speaking phone to your audio devices directly, hands-free answering. Headphone can be taken off so that you can wash the hat. V4.2 Bluetooth version, available for most of devices with Bluetooth function. Package Content: 1 x Bluetooth Music Hat Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item.