The XO X31 Gyro in-ear headphones connect to any device that has bluetooth. They come with a case for carrying and charging the headphones. Bluetooth headsets have many benefits for their users, including: 1. Freedom of movement: You can move freely without having to hold your phone in your hand, which allows you to work, exercise and do other activities or even drive while on a call. 2. Ease of use: Connecting the Bluetooth headset to your device is very simple and quick. Just turn on Bluetooth on your device and connect your headphones. Additionally, most Bluetooth headsets have control buttons on the headset itself, allowing the user to control their music or answer calls without having to touch their device. 3. Save time: With Bluetooth handsfree, you can do many activities without having to interrupt your call, allowing you to be more productive. 4. Long battery life: Bluetooth headsets usually have a built-in battery, which can provide up to several hours of continuous use on a single charge. This means you don't have to worry about having to charge your headphones often.