Designed with your lifestyle in mind， this wireless sports headset is durable， sturdy， and packed with great sound for your entertainment， leisure， sports， and other activities. Set yourself free from wires and cords with Bluetooth 4.0. Pair in a few seconds with your smartphone， tablet， or music player， and let your favorite music and podcasts drive you forward. With wireless audio range of 33 ft， you can roam around the house with uncompromised sound quality. With Its good Bluetooth transmission technology， you can enjoy the purest high-fidelity music and sound. Weighting only 0.47oz and coming with interchangeable ear buds， the headset will stay comfortable on your ears even when you are moving around. With 4 hours of play time and sweat-proof design， you can take it for a good work out， knowing the headset will remain stable as you sweat it out.  <br><br><strong>Features: </strong> <br>Comfort+ Bluetooth Running Headphones are the latest generation design created to accompany you throughout every moment of the day with the latest Bluetooth 4.0 technology allowing you to listen to music from your cell phone from as far away as 30 ft. <br>HD Clear Stereo Sound - Comfort+ Bluetooth earbuds provide incomparable sound quality， approximating the human ear， with a rich， dynamic sound stage that accentuates every detail of your music. <br>Receive phone calls at any moment - Receive or cancel incoming calls at the click of a button on the main control switch even during vigorous activities without necessitating handling the phone itself. <br>Imported Top Quality speaker- high-quality and ultra-thin diaphragm， provide you perfect and lossless voice effect. <br>The latest Bluetooth4.0 CSR8635 chip， have higher performance than normal Bluetooth4.0 chip. <br>Perfect fit for all sizes and ages - 3 sizes silicone Earcaps suitable for everyone and ears of any shape and size without sacrificing music quality.  <br>Built for extreme activities - Comfort+ Workout Earphones are totally sweat-proof and were developed to be used on all occasions， including during rigorous physical activities and impact sports. <br>Support simultaneously connecting to two mobile phones.  <br>Battery display for IOS system. <br>Universal device compatibility-Support Various Bluetooth-enabled devices， for example mobile phone(Android and IOS)， notebook， laptops， desktop， MP3/4/5， projector， etc.  <br>The super-long standby/music-playing time-built-in 70mA li-battery. <br>With Voice Prompts function， easy to control. Support voice control to answer call/redial， etc. <br>Portable lightweight， fashion and functional design. <br>Support Wechat， Automotive Navigation， QQ Voice and other software. <br><br><strong>Specifications: </strong>  <br>Bluetooth Chipset and Version：CSR's BlueCore® CSR8635 QFN V4.0+EDR <br>Bluetooth Profiles: A2DP， AVRCP， HFP， HSP <br>Working distance range: up to 10 meters  <br>Frequency: 2.4GHZ  <br>Battery: 3.7V/70mAh <br>Charging Port: Micro USB  <br>Charge Voltage and Current: 5V/120mA <br>Charging Time: about 2 hours <br>Talking time: about 8~10 hours  <br>Music Time: about 3.5~4 hours <br>Standby time: about 260 hours <br>Cable Length: about 51.5cm <br>Color: Black with Gold <br>Main Item Weight: 13.5g/0.47oz <br>Package Size: 12.4 * 7 * 3.8cm/4.88 * 2.75 * 1.49in <br>Package Weight: 46g/1.61oz <br><br><strong>Package list: </strong> <br>1 * Sport Bluetooth Headset  <br>1 * Micro USB charging cable  <br>6 * Pairs Silicone Earcaps <br>2 * Pairs Ear Locks  <br>1 * English User Manual