3.5mm Retro Telephone Handset Phone Telephone Receiver White

What is this?This is a retro mobile phone receiver that allows you to be more comfortable when answering calls. More suitable for people who communicate on the phone for a long timeWhat will I get?The Telephone Handset provides here,Color: WhiteRound Socket Diameter: 3.5mmCable length: 1M/3.28FTHandset Size:21*6.2*6.7cm/8.27*2.44*2.64“（L*W*H)In the package of: 1 x Telephone HandsetIs there any advantages of the product?This phone handset has an answer button and a volume button, you can adjust it according to your needs, with a 1-meter extension cable, you can easily answer callsHow to use it?Steps of intallation:1. When there is an call on the mobile phone, use the Telephone Handset plug to point the hand socket;2. Press the answer keyWhat should I notice?Only works with 3-channel 3.5mm audio socket,before purchasing, please confirm the size of plug