Customize this foldable headset and make it one of your promotional items! It is compatible with most devices. When connected, the effective range is 10 meters. It can stretch and adjust the size of the headset. It is foldable and easy to store, making your travel more convenient. It has a long battery life and can be used for about 10 hours. Of course, when the headset is out of power, you can also use a plug-in cable to connect the device. It comes with immersive breathable ear muffs to make it more comfortable to wear. Whether it's at home, at work, or on the road, it gives you the best experience. The prices for 700pcs or over are based on ocean shipments.