FanGoods Wireless Bluetooth Foldable Stereo Mic Headphone for Smartphone PC Good Quality, Fashionable Appearance, Adjustable Length Hinges, Very Comfortable To Wear, Foldable and Easy To Carry Built-in rechargeable lithium-polymer battery enables Up to 10 hours playing time, talking time up to 6 hours, and standby time 250 hours Built-in microphone Allows clear Phone communication, allowing you to answer or reject phone calls anytime and anywhere Also supplied with a 3.5mm cable that you can use to connect the headphone to devices without Bluetooth Supplied with a 3.5mm cable that you can use to connect the headphone to devices without Bluetooth.