1Ergonomics Design: The NENRENT S570 Earbud is designed according to ergonomics and the S570 is smallest bluetooth Earbud in currently Fits either ear wear the bud on right ear for better call clarity.</br>2Bluetooth issc V4.1 Version:Supports Multipoint Technology Can connect to two different devices in 10 meters range simultaneously. which makes it fit perfectly to your ear and comfortable. Guaranteed to be 100% secure & stable during intense exercise such as running climbing riding camping and other active sports even in a rainy day.</br>3Longest Service Time: Built-in high performance rechargeable Lithium-poly 60mAh batteryHigh capacity battery provides up to 6 hours call time and 4-6hr music playtime at 40-50% volume (adequate for home/office with little noise interference)full charge in around 1-2 hours and up to 130 hours standby time.</br>4Perfect compatible : Clear HD audio for listening to Audiobooks Podcasts and Netflix decent for music and calls. The S570 is compatible with most Bluetooth enabled devices such as iPhone 5/5S/6/6S/7 Plus Series??iPad 2/3/4/Air/Pro Series?? Samsung Galaxy S5/S6/S7??Galaxy Note 3/4/5 Series?? iPod Nano Series?? Laptop&tablets and another Smartphones LG/SONY/HTC etc.</br>5. Support Stream Music/Video/Audio. Its hands-free function would release your hands from answering the call during driving or walking. ??????????1 Year Worry-Free Warranty. 24-hours email contact service is available. Please let us know if you have any questions or concerns. We're standing by to assist you all the time.</br></br>Product Description</br></br><b>World's Smallest Earbud with 6 Hour Battery </b> <br> NENRENT S570 is designed with size and performance in mind. The lightweight and minimal sha"570 earbud creates a perfect fit?? so light and discreet you will hardly notice you're wearing it. Not only does the S570 offer a comfortable fit?? the earphone also sounds decent and offers 5-6 hours of battery life to get you through a day. *Audio playtime varies according to volume output level (dB) and audio content- a greater output yields a shorter battery life. ?? tested multiple units with iPhone 6s)</b> <br><br><br> Work: Stream music privately and leave 1 ear open to keep aware of your surroundings.<br> Home: Tune in on your favorite podcast while doing chores around the house.<br> Play: Fall asleep watching Netflix without disturbing your partner. (The S570 earpiece will not flash any light once it's on)<br><br><br> <b>Wireless Freedom</b> <br> Hear streaming w