True Wireless Earbuds. 3 technology ensures the stability of the connection when connecting the earphones. These truly wireless earbuds can be used separately or paired together. They are a great choice for working out, traveling, etc. Stereo Sound Quality: These earbuds offer a HIFI stereo sound and strong bass. Charging Case & Long Battery Life: The charging case can be charged via USB-C cable. The earbuds can be used for about 4 hours after being fully charged. The charging case can provide 3 additional charges for the earbuds. Comfortable to Wear: These earphones are ergonomically designed to fit your ears perfectly. The soft silicone ear hooks will not cause discomfort even after wearing