About this item NEVER POWER OFF: Both Wireless and Wired Mode are available. Up to 6-hour playtime in wireless mode with a high-quality microphone for hands-free calls, SD Card Player and FM Stereo Radio. Or use it as a wired headphone with the provided 3.5mm audio cable, which is never power off, allows you bring your music everywhere. COLORFUL, COMFORTABLE and Durable: the colorful headphones are charmed, the super soft over ear cushion simulate human skin texture which are covered in skin-friendly synthetic leather to ensure lasting comfort no matter how long you listen. The headband is adjustable in length to fit all people. The wireless headsets are ideal for long time music enjoying, gaming, TV watching or travel for kids, teens and adults. IMPRESSIVE SOUND QUALITY: The wireless headphones have 40mm Magnetic Neodymium Drivers deliver clear high and deep bass. You can choose different sounds such as ROCK/POP/CLASSIC/JASS/BLUE/HALL/BASS/SOFT/ COUNTRY/OPERA (Press EQ Key). High Definition Sound is praised by thousands of customers. ENJOY MULTI-FUNCTION and APP: APP enable you switch mode freely among Bluetooth, TF Card and FM Radio mode at random, set the headphones EQ, know about the playlist in the TF card, the saved radio stations. You can add or delete, play, pause, choose the last or next song and radio stations, adjust the volume and change playback mode. The free APP takes your hands off the buttons on the Bluetooth headsets. Please note that the APP function only works in the wireless mode. STABLE BLUETOOTH CONNECTION & WIDE COMPATIBILITY: NIA Bluetooth headphones can ensure a stable connection with a long working range of up to 33 feet (10m). It can be used with all your favorite devices like cellphones, tablets, laptops, computers, Chromebooks, as well as MP3, MP4, and other Audio devices.