Check the listing for details. 2 Pack 3.5mm Retro Telephone Handset Telephone Receiver Orange,Blue. Condition: New. Listed at 24.82 USD. 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:Orange,BlueRound Socket Size :3.5mmHandset Size:21*5*6cm/8.27*1.97*2.36“（L*W*H)Cable length :1M/3.28FTIn the package of: 2 Pack 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.