BAT Wireless Headphones are Classic Adjustable Headsets. It has a great heavy bass for FM Radio/ TF Card, with soft ear-pads thus, making it a great headphone to use in listening to your favourite hits. This is suitable for everyone. With TF Card Slot/FM Radio Great Heavy Bass Fashionable Design Wireless and Wired Excellent sound quality Adjustable and Comfortable design. This product is especially designed to match the shape of your head. Therefore it will feel comfortable and stay in place while doing sports. With its fashionable appearance and built-in MP3(WMA) player with HiFi earphones (sound output up till 85dB ) you can always enjoy high quality music. When the built-in Lithium battery fully charged, it can play music for about 4-5 hours. It also supports micro SD card functions up to 32Gb plugged into an inbuilt TF port.