50 Hrs Playtime and Dual LED Display: Each earbud lasts up to 8 hours on a single charge, and up to 50 hours of playback with the charging case, giving you an exceptional long-lasting experience. In addition, the in-ear wireless Bluetooth headphones are equipped with a smart LED display that visually shows the power level Bluetooth 5.4 and One Step Auto-Prairiing: The wireless earbuds utilize the latest Bluetooth 5.4 technology for more stable transmission and longer range, providing you with an uninterrupted call and music experience. After the first pairing, simply remove both wireless earbuds from the charging case and they will pair automatically Superior Sound Quality and Clear Calls: The S66 Bluetooth wireless headphone with 13.4 mm graphene diaphragm delivers powerful bass, clear mids and bright highs, and ear buds with dual hybrid ENC microphones passively eliminates 85% of background noise for clearer calls Smart Touch and IP7 Waterproof: The smart touch control of