RayCon E60s feature Ergonomically designed ear buds with soft in ear cushions to ensure your earphones stay comfortably firm in place to guarantee fatigue free ears and long lasting comfort. The E60s use new audio technology to keep your earbuds in sync while listening to music or watching video, while providing clear and powerful sound. With new and improved lithium polymer battery allows seamless enjoyment of music for up to 4 hours and 120 hours stand-by with a quick charge of only 1 hours. Connect seamlessly with all Bluetooth enabled devices up to 30 feet away. With Noise Suppression technology focus on your favorite music and answer calls without skips or missed words.