This wireless stereo Bluetooth 4.1 headphone is light・ invisible and fashionable. With the <br />Features of Bluetooth 4.1 Technology・ built-in high-grade microphone & speaker・ hands-free calling function and lightweight design・ it's convenient for you to listen music and answer calls while doing sports or driving. A great companion for your daily life・ office time・ driving or travel.  <br /><br />Features:<br />[Bluetooth Connection] Bluetooth 4.1 technology ensures strong signal and fast transmission・ and offers high-fidelity stereo music. Compatible with iOS / Android / Windows Smart phones & Tablet PC and other Bluetooth-enabled devices.<br />[Lightweight and invisible] The Bluetooth headset with 8g lightweight・ 18mm diameter mini size and ultra-soft earcaps (for left & right ear) provide you long time wearing comfort・ and guarantee 100% stable.<br />[Built-in High-quality Microphone] High-sensitivity microphone grasps the detail of voice・ ideal for in-car calling or working use. Perfectly sets your hands free when you're at work or driving.<br />[Duration Time] Built-in rechargeable 50mAh Lithium battery lasts up to 5 hours of talking time or 3 hours of music playing time and 120 hours of Standby Time on one full charge.   <br />[Easy Operation] Simple operation・ easily control playing / pausing・ adjusting the volume・ previous / next songs・ answering / rejecting / ending an incoming call and redialing the last number.<br /><br />Specifications:<br />Bluetooth