sourcing map 3.5mm Retro Telephone Handset Telephone Receiver for Microphone Speaker 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 time What will I get? The Telephone Handset provides here, 3.5mm Round Socket;Handset Size:21*5*6cm/8.27*1.97*2.36"（L*W*H);Cable length :1M/3.28FT In the package of: 1 x Telephone Handset Is 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 calls How 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 key What should I notice? Only works with 3-channel 3.5mm audio socket,before purchasing, please confirm the size of plug