New York, June 1999 — Ericsson, Inc. in Research Triangle Park, North Carolina, US, introduced a suite of new handsets on June 21 at MobileFocus ’99 that the company plans to offer for sale later this year and early next year.

For those who want a wireless communications device rugged enough for the rough-and-tumble of life on the job or life with children, Ericsson will offer the R250d PRO, nicknamed the “Rock.”

The tri-mode Time Division Multiple Access phone works on 800 MHz analog and 800 MHz and 1900 MHz digital frequencies.

It is water, shock and dust resistant and meets American military MIL810E specifications for hazardous environments.

The Rock also features a radio mode that allows several types of TDMA group calling for up to 96 people at a time anywhere in North America: standard, first-person answer, sequential call and broadcast mode.

R250d PRO: The World’s Most Rugged Go-Anywhere™ Mobile Phone

Facts and features

Introducing the Ericsson R250d PRO, The Rock. It’s the ultra durable mobile phone for people who demand uncompromising performance under tough conditions.

Rugged Reliability – Take It Anywhere

Only The Rock combines a high-impact BALLISTECH® Rubber Overmold Frame with an XTREME-SEAL” Body Design to give you water, shock and dust resistant performance. It even meets U.S. military standards for rugged environments.

Two-Way Radio Features and PRO-Group” Calling-Advanced Communication

The Rock isn’t just rugged, it also has two-way radio features for private and group calls. Couple this with PRO-Group” technology, and with a press of a button, you can contact up to 30 people in a variety of ways including conference call, first-person answer call, sequential call and even broadcast call for up to 96 people at once. It’s the most advanced communication tool you can own!

Key features

  • Performs in tough, heavy duty conditions
  • Water, dust and shock resistant
  • Reinforced Magnesium Frame
  • SilentVibe® alert for noisy environments


  • Reinforced Magnesium Frame
  • XTREME-SEAL® Body Design


  • 2 Hour Rapid Charger
  • Built-In SilentVibe®
  • Built-In Speakerphone
  • Emergency Alert Button
  • High Capacity Incoming/Outgoing Call Logs
  • High Capacity Phone Book
  • SuperSpeed Dial®
  • Two-Way Radio Features

Network services

  • Tri-Mode Technology


  • High Impact BALLISTECH® Overmold
  • Ultra Performance Pro Battery

The R250d PRO, which will have a suggested retail price of $299 when it debuts commercially this fall, has a maximum talk time capacity of four hours and standby time of 80 hours. It also features a silent call alert, a speaker phone, a high-capacity phone book, speed dial and redial functions, data and fax capabilities and full support for voice mail, conference calls, call screening and caller identification.