Universal Compatibility Work with most bluetooth enabled phones,can connect with 2 cellphones simultaneously;Ultra-Long playing time: Up to 8 hours talking time and 200 hours standby time.;Headset and handsfree profile,support answer/end/refuse call,redial and voice dialing function,great for truckers and Professionals on the go;Specially designed and very comfortable with calling,not for listening music;The Skin-friendly Ear-cushion give you an ultra fashion, compact and comfortable experience, as well as the over-head and light-weight design(only 41g).