Wireless Bluetooth Headset, Langsdom BT28 Super Deep Bass HiFi Sound Foldable Over-Ear Headphones ,Bluetooth 4.0,Hands-Free for Smart Phones & Tablets,Sharing Fun (Black) Deep, immersive sound, improved best-in-class performance for wireless headphones.Generous 10 Meter Distance. Latest Bluetooth technology for easy connectivity and seamless audio/video syncs. Advanced microphone system, HD voice for clear calls in windy environments. Up to 15 hours play time with rechargeable lithium-ion battery. Ergonomic adjustable headband and protein leather ear-cushions give an ultra-comfortable fit.Outdoor Headphones with Foldable Design is Great for the Gym, Jogging, Cycling & Long Car Travel. Just started to use, maybe the head is a bit tight. After a period of time, it is more comfortable than before. As a new headphone, there is a layer of film on the outside surface to prevent scratches in transport.