True Wireless Earphones The main feature is "gentle on the ears and difficult to fall out" due to the adoption of air conduction technology and an open-ear (clip-on) design. For those who want to listen to music in various everyday situations, the ability to hear outside sounds without any problems and smoothly respond to the surroundings allows for safe and secure use. 【Fast and Stable Connection】 Adopting Bluetooth 5.3, fast transmission and stable connection are ensured within a range of 10m with various Bluetooth-compatible electronic devices such as iPhone, Android, Windows, and iOS, with almost no delay or sound skipping. 【Touch Sensor Operation】 Simple touch operation allows for easy music playback/pause and call answering/ending. - Brand: KING LUCKY - Model Name: OPENEAR - Bluetooth Version: 5.3 - Playback Time: 4 hours continuous, up to 20 hours - Charging Time: Approximately 2.5 hours Unopened new product (box slightly dirty)