Brand: SUNDEER Charging compartment and 60 hour playback: When the red light on the outside of the casing is displayed, it indicates that the charging compartment is out of battery and needs to be charged. When charging, the LED light starts flashing, and when the green light comes on, it is fully charged. When you place the earbuds into the casing, they will start charging. The 470mAh battery capacity charging case can provide an additional 4 full charges for two earplugs, and each earplug can last for 6 hours on a single charge. Therefore, you can enjoy a total of 60 hours of music time by taking turns using it Wireless charging and IPX5 waterproof: The charging case of this Bluetooth earphone supports wireless charging and USB C-line charging. The rated waterproof level of this wireless earphone is IPX5, and the nano coating on the surface of the earbud can prevent water and sweat from penetrating, making it suitable for use as a sports wireless earphone. You can listen to music while running, working, reading, sleeping, attending meetings, etc One step pairing and easy touch control: After the first connection, once you open the charging case, these wireless earphones will automatically connect with your device, making it faster and more convenient. During use, you can touch any earbud to control the phone, such as music switch, volume adjustment, phone call, voice assistant, etc. No need to adjust through mobile phone