UGREEN HiTune S3 Revolutionary Open-Ear Wireless Earphones Experience Unparalleled Sound and Convenience. Introducing the UGREEN HiTune S3, cutting-edge open-ear wireless earphones that redefine audio excellence. With advanced Bluetooth 5.4 technology and innovative noise reduction, immerse yourself in crystal-clear sound without compromise. Open-Ear Design: Effortless wear and seamless sound transmission Advanced Noise Reduction: Minimizes ambient noise for focused listening Bluetooth 5.4: Stable, high-speed connectivity up to 10 meters IPX5 Waterproof: Resistant to sweat, rain, and spills Long-Lasting Battery: Up to 5 hours playtime, 15 hours with charging case Compact Design: Ergonomic and lightweight for all-day wear Hi-Fi Sound Quality: Rich, detailed audio with deep bass Clear Voice Calls: Enhanced microphone for crisp conversations Wireless Freedom: Stream music, podcasts, and calls without constraints Easy Pairing: Seamless connectivity with iOS and Android devices Charging Case: Compact storage and charging on-the-go Discover the UGREEN HiTune S3, where innovative design meets exceptional sound quality. Bluetooth Version : 5.4 Bluetooth Protocol : HFP, AVRCP, A2DP Transmission Distance : 10M Max Audio Decoding : AAC/SBC Waterproof : IPX5 Playtime : Up to 7.5 hours (on a single charge) Playtime : Up to 30 hours (with charging case) Earbuds Battery : 50mAh Charging Case Battery : 500mAh Charging Time : Earbuds 1.5h /charging case 2h Charging Port : USB C