Bass earphones have been carefully designed, rigorously tested and produced to provide the perfect audio experience for every audio-loving customer.Advantages of earbuds with mic ? Earphones are ergonomically designed, comfortable to wear, stylish in appearance and sophisticated in design to enjoy even better audio. ? Metal aluminum shell of earbuds has the characteristics of light weight, high density and good sealing performance. ? Wired earphones has been tested for 15,000 times and is still working, ensuring wear in daily use; wire length is 3.9Ft. ? Unique, custom fit is key. Three extra soft silicone plugs (S/M/L) for the ear tips fit each ear, choosing the right silicone plug size for comfort. ? Earbuds with volume control compatible with iphone, ipad, ipod, Samsung Galaxy, android equipment, Tablet PC, PC, music player and other standard 3.5mm interface audio devices.Use of function keys Answer | End Call | Reject Call | Switch Songs | Activate Siri | Volume +/- One click: Start/Stop the music. Two clicks: Next song. Three clicks: Previous song. Long press: Decline call/Start Siri. Short press: Answer/End calls. Press +/-: Volume up/down.After-sales Guarantee If your earphones has any problems during use, please feel free to contact us and we will give you a satisfactory response.Important Hint Compatible iPhone7 & iphone7 Plus; iPhone8 & iphone8 Plus; iPhone X. Need to be equipped with adapter before they can be used. Some devices do not support the volume +/- function.We sincerely hope that you have a pleasant shopping experience.