Bluetooth 5.0Aoslen True wireless headphones use the latest Bluetooth V5.0 chipset. There is a faster and more stable signal transmission and has successfully achieved low latency without interruption. Whether you are at home, in the office or on the go, don't worry about a disconnected connection.Easy PairingAoslen wireless headphones give you the most portable one-button quick pairing operation. You only need to remove the earphones from the charging case, and the earphones will automatically turn on and pair.If you put the Bluetooth headset back in the charging case, the headset will automatically power off and charge the earbuds.Thoughtful DesignAoslen Bluetooth headphones with LED display. you can easily read the power of the charging box, without worrying about the power outage of the charging box. Not only that, we also added the charging touch point of the headset, which improves the charging speed of the earbuds , so that you can get rid of the trouble of no power and enjoy the music.Ergonomic Design Aoslen scanned the ear canal data of thousands of people for the best ergonomic design. The lightweight, safe and comfortable half-in-ear design fits your ears perfectly. We use the lightest materials so you wont feel uncomfortable even if you wear them on your ears for a long time. It will not rub, slip, or fall during exercise. When listening to music, you can avoid squeezing and expanding the ear canal.Binaural Synchronous Transmission The software and hardware are deeply optimized with a new architecture. The left and right ears are connected synchronously, and the sound is transmitted to the left and right ears at the same time. The anti-interference is more stable and the sound delay is reduced. The headset can run for 4 hours on a single charge, and the headset with the charging box can run for up to 20 hours.