• Made of knitted material, fashion and keep warm with answer the phone in winter
• Bluetooth V4.1 version, available for most devices with Bluetooth function
• Set-in MIC, available for cell phone to transmit the speaking phone to your audio devices directly so that the user can make hands-free calling via the device
• Human engineering design: intuitive control buttons and high density built-in rechargeable Li-ion battery
• The Bluetooth hat is perfect for traveling, waiting for the bus, jogs in the cold or just rocking out in your bedroom
• Notice: The speaker can be taken off so that you can wash the hat

Specifications:

• Bluetooth Version: V4.1
• Working Distance: 10M
• Frequency Range: 20Hz-20KHz
• Li-ion Battery: 3.7V/180mA
• Charging Time: 2.0 hours
• Continuous Working Time: 4-6 hours

Compatible with:

• iPhone iPad Samsung Huawei Sony device with Bluetooth 4.1 or above