1. A true first-line link without transfer No battery required/plug and play/mini microphone
2. In-ear design Fits the ear canal/does not enter the ear without hurting the ear/three fixed points Ergonomic design, long-wearing, comfortable and light
3. Flexible wire is not easy to wind Lossless transmission, restore sound, not easy to knot or break
Note: 1.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. 2.Real color may slightly different from pictures due to computer screen's resolution, brightness, contrast etc. Hope understanding. 3.There are questions about the product, don't rush to give us bad reviews, contact us, this is very important! If you like our products and services, I hope you can give us five-star praise, thank you. 4.Follow us to get a coupon!