BuySevenSide Bluetooth in-Ear Earbuds with Mic (Black) Superior Sound for Your Ears: Enjoy superior sound with Bluetooth 4.1 supporting HSP/HPP/A2DP/AVRCP. The earphones provides smarter Digital Noise Reduction than any other model to keep the noise out. Most Powerful Battery Backup: Built in 400 mAh Battery offers up to 40 hours standby time with charging case. It is well-performance for outdoors without anxiety for charging. Also, you just spend 1-2 hours charging it. Ergonomic Design: Fine sound inside minimalist earbuds that offer Comfort and Security in your ears. The earphones can be perfect for Sports, Gym Exercise, Watching Video & Listen Music. Universal Compatibility: Perfect suit for any smart device, includes smartphone and tablet, like Android smartphone (Samsung Galaxy S8, LG G6), Apple(Iphone & Ipad). Also, it allow you Connect Two Mobile Phones at the Same Time. 18 MONTHS WARRANTY: We provide 18 Months Warranty for your 100% Satisfaction. Please feel free to contact us, if you have any problem with your Purchase.