?Specification: Compatible With: most of devices with Bluetooth function Material: Coral fleece｣ｬ Leather Bluetooth Version: 3.0+EDR Frequncy: 2.4026GHz-2.480GHz Transmission Distance: 10m Frequency Response: 85dB Battery Capacity: 3.7V 200mAh Charging Time: 2 hours  Standby Time: 30h or so Working Time: About 5h Charging Voltage: DC 5V<br> Color: Black<br>  <br> Features:<br> - Coral fleece material｣ｬ warm｣ｬ soft and stylish design.<br> - Protects you from cold winter and will also allow you to listen to music and talk while doing variety of other activities.<br> - Built-in microphone｣ｬ available for cell phone to transmit the speaking phone to your audio devices directly｣ｬ hands-free answering.<br> - Headphone can be taken off so that you can wash the Ear cover.<br> - Allows you to keep your music where it belongs - in your ears.<br> - You will look great and keep warm while listening to your favorite music. Keep the sound track to your life playing all the time.<br> - Perfect for traveling｣ｬ waiting for the bus｣ｬ jogging in the cold or just rocking out in your bedroom.<br>  <br> Package Included:<br> 1x Wireless Bluetooth Music Earmuff