1. Non-earplug design - The upgraded version of the earphone adopts the earhook design, which is not in-ear and will not be damaged by the eardrum. It is easy to carry, suitable for all people, and does not fall down when running. Wear it on the left or right ear, and glasses are also fine. Built-in microphone for hands-free calling. 2. The speaker unit is on the outside - the speaker is close to the ear but not in the ear, it will not block the ear canal. Listen to the surrounding environment during calls or music, safer on the road or in certain scenes, and more portable for business and work. 3. Suitable for 2 ears - suitable for left and right ears, with ergonomic structure, the smooth body curve fits tightly on the ears, so that the ears are evenly stressed, giving you a better wearing experience. 4. Lightweight design - 10g weight, very light, no pressure or pain for a long time to use. Earhook design and ergonomic design, the wireless earphones stick to the ears, suitable for all people, and will not fall off when running or driving. 5. Skin-friendly material design - the surface of the fuselage is coated with metal, which is as delicate and smooth as skin, and it is extremely comfortable to wear every time. The built-in 90mAh lithium battery meets your needs for large power and longer battery life.