Got great headphones but they aren't Bluetooth? TUNAI Square is the perfect device to bridge the gap and let your wired headphones connect with Bluetooth phones, stereos, PMPs, and more. With Qualcomm aptX audio technology, this portable receiver easily pairs with your phone or device via Bluetooth, letting you enjoy wireless CD-quality audio and hands-free calls for up to 7 hours. TUNAI Square comes equipped with buttons for play/pause, Siri/Google Assistant, skipping tracks, and volume up/down, as well as integrated cable management to keep your headphones cable tidy. TUNAI Square connects directly with no special apps needed.