【Hearing Protection Technology & Ultra-Lightweight Design】With an open-ear design that doesn't block your ears, this bone conduction earphone solves the problems of vibration and pressure that occur with conventional bone conduction earphones, making it less likely to cause discomfort. Even with continuous wear for long periods, there is no pain. You can safely enjoy music while taking in the sounds of vehicles while you are out, which is safer. You can use it with peace of mind while running, walking, or commuting. If you are a beginner or don't like in-ear earphones, alacoo bone conduction earphones are perfect! 【True Wireless Bone Conduction Earphones & More Freedom with Music】Bluetooth 5.4 communication provides dramatically improved communication speed, range, and stability, even in congested outdoor radio environments! Because it is a completely wireless type, you are free from the hassle of cables, and it feels like music has become a part of you! Furthermore, it excels in noise-canceling technology during hands-free calls, making it ideal for teleconferences. This is a high-performance model that is active in a wide range of scenes, from business to everyday use. 【Type-C Fast Charging & 8 Hours of Stable Connection】It also supports fast charging, making charging "safe," "fast," and easy and convenient. The bone conduction earphones are slim and lightweight, but the battery lasts a long time. Continuous playback time is up to 8 hours. You can listen to music, calls, audiobooks, podcasts, etc., without worrying about the battery level. 【Easy Operation & Memory Titanium Alloy】Made of high-quality memory alloy material, the earphones will not deform even if they are bent, providing stable usability over a long period. The earphones feel as light as a feather, weighing only 26g! It supports the waterproof and dustproof standard [IP55], and is also durable against rain and sweat!! You can easily control "music playback/pause, skip forward, skip back, volume up, volume down, answer/hang up/end calls" with one hand. 【Package Contents】 Bone conduction Bluetooth earphones *1, Type-C charging cable *1, Earplugs *2, Earplug case *1, Japanese instruction manual *1