Nextel Motorola i530 Walkie Talkie Black Boost Mobile Flip Phone | eBay
Nextel makes leap into 21st century
Direct PTT - The Nextel T320 is the full package. This model is a Smart- Radio with PTT & 2-Way Manage your entire fleet from your palm with full GPS Tracking and Mapping.
Motorola Nextel i880 Repair - iFixit
It's no accident that Apple chose a yellow icon for its walkie-talkie feature. I dug out my old (2002ish) Nextel with PTT (push to talk). It was all the rage back then... :