1、ONE BUTTON OPERATION: Multi functional cell phone handset, press the one key answer button to answer or hang up a call. 2、ADJUSTABLE VOLUME: Support handset volume control, slide to adjust the listening volume to meet the needs of the scene. 3、3.5MM PLUG: The wired cell phone handset features a 3.5mm sound plug, compatible with different brands of smartphones. 4、FLEXIBLE USE: This wired mobile phone handset is designed with a 9ft coiled cord for added flexibility in the range of use. 5、RADIATION PROOF: Retro style cell phone receiver reduces cell phone radiation with excellent sound quality, also suitable for computers.Item Type: Cell Phone HandsetMaterial: ABSCompatibility: Works with all smartphones and computers with a 3.5mm headphone jackFunction: Supports Hang Up and Answer1 x Cell Phone Handset