[True Open Ear Headphones] 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.[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.[40H Playtime & Digital Display]On single fully charge, bluetooth headphones last up to 20 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. Don’t have to worry about any power issue.[Powerful Stereo Sound ] Equipped with 16.2 millimeters vibrating diaphragm speaker drivers that are 3 times larger than other wireless earbuds, headphones provide pure balanced audio and clarity output for all music genres. Crystal clear, deep, resonant bass, finely tuned sound signature delivers immersive sound that puts you on the center stage.[Latest Bluetooth 5.3 Technology] Bluetooth earbuds feature the latest Bluetooth 5.3 technology, ensuring a fast and stable connection. You can enjoy a low-latency listening experience with audio and video perfectly synced without any delay.【When used in a noisy environment, the effect of listening to music is relatively poor. Suitable for learning，reading，work，home, sports, travel and other scenes to wear.Very honored that you are willing to choose our products】For the first time, please take out the two headphones out of the headset box and wait for three seconds. The 2 headphones are automatically paired with the headset. If you only take out one headset, the device is only connected to one headset, which makes the other headset unable to work. You need to press the two headphones to touch the area at the same time, and the device can be used here.