The old phone handset with your cell is not new. Although this approach is about style. For $185.00 you get…

Bluetooth brings the sleek 80’s inspired PIP*PHONE up-to-date allowing wire-free calling with MAC, PC and mobile/cell phones alike

• - Connects wirelessly to any Bluetooth enabled MAC + PC or mobile/cell phone
• - 5 hours talk time and 180 hours standby
• - Base holds and protects the handset
• - Packs easily with laptop for use when travelling or in a WiFi zone
• - Buttons control volume, answer and end calls when used with a mobile/cell phone
• - Bluetooth version 2.0
• - Range: 5 to 10 metres
• - Can connect to PC/MAC and mobile/cell phone simultaneously if other devices are also Bluetooth version 2.0
• - Original Design and Manufacture by HULGER

They also sell an adapter to connect it via usb to your computer to make calls over the internet.