[True Open Ear Headphone] Wireless headphones adopt a completely open design, the earbuds can be gently and firmly placed on the top of the ear. Open ear earbuds are typically lighter and more breathable than in-ear headphones, making them more comfortable to wear for extended periods of time.[30H Playtime & Digital Display] On single fully charge, bluetooth headphones last up to 4 hours, and the charging case can charge the earbuds an additional time, so you can get 40 hours of total playtime from a fully charged case. In addition, the smart LED Power Display in the case shows the remaining battery in real-time, which lets you know if the charging case or running headset needs to be charged or not. Dont have to worry about any power issue.[Be Aware of Surrounding] Since open ear headphones don't go into your ears, they can make you more aware of your surroundings. When you listen to music while running or cycling outdoors, you can still hear approaching cars or other potential hazards and go through the day with safety.[Powerful stereo sound] Equipped with 16.2mm vibrating diaphragm speaker drivers that are three times larger than other wireless earbuds, the headphones deliver pure balanced audio and clarity output for all music genres. Utilizes the latest directional audio technology, allowing you to communicate clearly with others on the phone. Crystal clear, deep, booming bass with finely tuned sound signature provides immersive sound that puts you center stage.[Button Control and Service] Easily control your music and phone calls with the multi-functional buttons on the wireless headset. The simple button control is very convenient to play/pause music, change songs, volume +/-, activate Siri, answer/hang up/reject calls, and also prevent accidental touching.