V3.0+EDR Bluetooth version, available for most of devices with Bluetooth function. Built-in microphone, available for cell phone to transmit the speaking phone to your audio devices directly, hands-free answering. Built-in Li-ion chargeable battery, charge via USB cable, long stand-by time. Headphone can be taken off so that you can wash the hat. Allows you to keep your music where it belongs - in your ears. You will look great and keep warm while listening to your favorite music. Keep the sound track to your life playing all the time. Perfect for traveling, waiting for the bus, jogging in the cold or just rocking out in your bedroom.
Specifications: Bluetooth version: V3.0+EDR Frequency: 2.4026GHz-2.480GHz Transmission distance: 10M / 32.80ft Transmission distance of Mic: ≤1M / 3.28ft Li-ion battery: 3.7V/160mA Charging time: 2 hours Number of charge: > 1000 times Charging voltage: DC 5V Standby time: 60 hours or so Continuous working time: about 3.5 hours