Dial "R" for Retro

Yeah, we know all about bluetooth headsets for cell phones, but forget that stuff! We have here the latest development in cell phone technology and it's a big hunk of beautiful plastic. An accessory for your phone that you can really grab onto. Something with heft and that good-old-American solid construction feel - like a 1972 Cadillac.

The Retro Phone Handset* is a new production replica of the Western Electric 500-series model, which was the classic phone handset for several decades. It's been slightly modified to work with the headset jack of most cell phones (or via a "hands free" adapter kit, sold elsewhere). Just plug-in and dial - or for added effect, put your cell phone in your pant's pocket - then it looks like you're talking on a phone connected to... well, who knows?

Also has these great features.

-2.5mm jack will work with most phones (Motorola, LG, Samsung)
-Connection can also be made using a "hands free" adapter kit (not included)
-No batteries required
-Includes: handset and classic curly phone cord with connector
-Adapters now available for: Nokia, Ericsson, Siemens (more details) - $4.99 each
-Works with Blackberry, does not work with RAZR phones

*(entire text copied verbatim from the link).