About this item Volume Control: Mobile phone telephone receiver has cell phone volume control, slide to adjust the listening volume. Stable Perfromance: Cell phones handsets feature retro , reduced cell phone radiation, and superior sound quality. 9 feet coiled cord for added flexibility. One Touch : Cell phones handsets have a one touch answer button, press to answer or ring off the phone. 3.5mm Sound Plug: Retro telephone headset has a 3.5mm sound plug, which is compatible with various smartphones on the market. Sound Switch: Retro telephone receiver has an sound switch to further improve compatibility with different brands of smartphones. › See more product details