This neck-mounted headset uses the latest Bluetooth 5.0 technology that's perfect for your listening pleasure - whether you're in the gym or the great outdoors. This device is equipped with cinematic 8D surround sound. It also doubles as an MP3 player and FM radio. You can even expand your music list with a slot to insert a TF card up to 32 GB. It's light, compact and easily folds in your bag.