♬ [BLUETOOTH 5.0 AND FAST PAIRING] Cshidworld -V11 equipped with advanced Bluetooth 5.0 technology, provides more stable and One-Step connection to you. Only need to take out two earbuds after you open Bluetooth function, they will open and connect automatically. In a matter of seconds, you are in your euphonic music world. Cshidworld -V11 Supports A2DP, AVRCP, HFP, HSP, can connect with Laptop, iPad, iPhone, Android and talk to SIRI. ♬ [STEREO SOUND QUALITY WITH DEEP BASS] Upgraded Bluetooth 5.0 and lossless HD rendering technology that produce incredible sound quality with deep bass. High Quality Bluetooth Chip, Which Eliminate Noise and Echo. DSP-Equipped audio processor, Provide Bass Sound. Cshidworld -V11 wireless earbuds is designed to transmit CD quality audio over Bluetooth and enhanced audio quality. ♬ [SUPER LONG BATTERY DURATION] Single charging can maintain this bluetooth earbuds working 5 hours. 600mAh Charging Case provides 6 times charging for earbuds, totally 30 hours working time. Just enjoy the music from morning till night! Keep you away from all the chaos and stay fun throughout all the day. ♬ [IP56 WATERPROOF] Owing to the success in IP56 Waterproof technology, our bluetooth earbuds has designed and provided favorable waterproof effect which can easily resist sweat and water. It’s absolutely ideal and prefect for gym, sport lovers and all kind of outdoor activities. ♬ [WORRY-FREE AFTER-SALE SERVICE] Cshidworld provides 12 months of Quality Customer Care to our customers. For any issue, please contact our customer service team for help, and we will be there within 24 hours. We are committed to be a customer-oriented seller and always place your satisfactions as our top priority. Please feel free to contact us without any hesitation if you have problem or need any help.