[Open-Ear Ergonomic Design] Featuring a non-in-ear, bone conduction design, these Bluetooth-compatible headphones offer a comfortable and secure fit that won’t hurt your ears, even during extended use [Long Battery Life] The 150mAh battery ensures lasting performance. Enjoy up to 15 hours of talk time, 13 hours of continuous music playback, and an impressive 300 hours of standby time on a single charge [Lightweight & Comfortable] Engineered with a lightweight body, these headphones are designed to be worn all day without discomfort. The lack of an ear canal insertion chamber reduces pressure on the ears, providing a more natural, breathable experience [Advanced Bluetooth-compatible 5.2 Connectivity] Powered by the latest Bluetooth-compatible 5.2 technology and the Bluetrum 5392B chip, these headphones deliver a stable connection and high-quality audio with a range of up to 10 meters [Support TF Card] You can also use a TF card up to 32GB for added listening options, TF card is not included Specifications: Bluetooth-compatible version: 5.2 Bluetooth-compatible chip: Bluetrum 5392B Battery capacity: 150mAh Play time: about 11 hours Talk time: about 10 hours Standby time: about 300 hours Charging time: about 2 hours Effective distance: about 10 meters Maximum supported TF card: 32G (not included)