Bluetooth version: 5.3 Material: ABS+Silicone Earphones 30mAh, extended for 6 hours Charging case 400mAh, charge earphones 3-4 times Package includes: earphones and charging case, type-c data cable*1, instruction manual*1 Five selling points: 1. Non-in-ear design: Wireless Ear Clip Skeleton Conduction Headphones adopts a non-in-ear design, which makes you feel relaxed and comfortable when wearing for a long time, reducing unnecessary ear pressure and inner ear discomfort. 2. Breaking through the traditional hearing experience: Without inserting the earphones into the ears, Wireless Ear Clip Skeleton Conduction Headphones allow you to fully experience the music, thereby better protecting your hearing. 3. HIFI sound quality: This headset uses bone conduction technology to allow music to be transmitted to your ears in a more natural way, presenting clearer and more realistic music effects, and experiencing a more perfect music feast. 4. Safety and health: Wireless Ear Clip Skeleton Conduction Headphones not only provide excellent listening enjoyment, but also protect your health and safety. Compared with ordinary headphones, this headset can better prevent ear damage and infectious diseases. 5. Convenient and practical: Due to the simple and lightweight design of the headset, Wireless Ear Clip Skeleton Conduction Headphones can be easily carried with you, allowing you to enjoy a pleasant music time anytime and anywhere. At the same time, due to the use of Bluetooth technology, you dont have to be bothered by annoying cables.