Stone Mountain, Ltd.

05/20/2026

🚀 Streamline your fleet's communication with Stone Mountain’s Vehicle Push-to-Talk over Cellular (PTToC) systems.

Traditional two-way radios limit your coverage and drain your budget. Stone Mountain changes the game by leveraging nationwide cellular networks to deliver crystal-clear, instantaneous communication across your entire fleet, no matter the distance.

Built for the demanding environments of logistics, construction, and public safety, our rugged in-vehicle PoC solutions ensure your drivers stay connected safely and legally.

Why Fleet Managers Choose Stone Mountain PTToC:
✅Global Coverage: Talk across the city or across the country instantly.
✅Rugged Durability: Built to military standards to withstand extreme temperatures and vibrations.
✅Driver Safety: Hands-free, loud audio options keep eyes on the road and hands on the wheel.
✅Cost Efficient: Eliminates the need for expensive radio tower infrastructure and licensing.

Upgrade your operational efficiency and keep your team unified.

👉 Contact us today to schedule a live demo of our vehicle PTToC systems.

04/30/2026

BUILT FOR THE FRONT LINES. ENGINEERED FOR THE FUTURE.

When your mission is critical, your communication gear shouldn’t be a question mark. Meet the Stone Mountain UVox Pro USB Speaker Mic—the industry’s most rugged and loudest PTT solution.

Why professionals choose the UVox Pro:

Military-Grade Tough: Tested to MIL-810H and IP68 standards, it’s waterproof and dustproof for the harshest environments.

Loud & Clear: Delivers 116+ dB of crystal-clear audio so you never miss a word over engine noise or wind.

Seamless Integration: Designed specifically for top PTT apps like T-Mobile Direct Connect, Zello, FirstNet and Kodiak.

Universal Connectivity: Features interchangeable UMod™ USB connectors (USB-C or USB-A) to fit your fleet’s tablets and smartphones.

Equip your team with the gold standard in Push-to-Talk.

https://lnkd.in/et5iBZ9q

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04/14/2026

As a global leader in the Push-to-Talk industry supporting cellular and Land Mobile Radio platforms with our rugged and loud Speaker Microphones we often here people say, "I miss the good ole Nextel days."

Well here's a blast from the past. Stone Mountain, in conjunction with Sprint Nextel, developed the first truly rugged Push-to-Talk over Cellular system.

With decades of experience designing and developing Push-to-Talk hardware, supporting PTT apps such as Zello, T-Mobile, and others
the rugged Push-to-Talk over Cellular System remembered as "Chirp, Chirp" lives on!!

https://stonemountainltd.com/about-us/

01/23/2026

Stone Mountain's UVox USB Speaker Mic supports PTT, emergency calling, replay last message, channel select, volume control, 2nd PTT, remote charging, and more.

UVox Pro is the most rugged, reliable, and loudest PTT USB Speaker Mic in the industry with various adaptable connectors including USB-C straight, USB-C right angle, and even USB-A connector options.

Turn your cellular device into a rugged and loud Push to Talk solution with UVox Pro.

Contact us for more details.

Introducing UVox™ Pro from Stone Mountain. The loudest, most rugged USB PTT Speaker Mic - Providing instant voice communications with unlimited range. The fe...

10/21/2022

Stone Mountain Ltd., a leading OEM of rugged Push to Talk Speaker Mics and accessories is growing.

We are looking for part time and full-time production workers. Located in Huddleston (Bedford County), about 15 minutes from Smith Mountain Lake. No experience necessary. Requirements include attention to detail, good work ethic, work well as a team player, and willing to learn. Flexible schedule, friendly environment, and opportunity to be part of a team that delivers premiere communication hardware solutions to customers all over the world in every industry.

If interested, please send resume or contact [email protected] for any questions. Thank you.

03/24/2021

Stone Mountain's BluSkye® Speaker Mic has emergency calling as well as the ability to replay last messages. Connects to phones, tablets, Windows PC, and even Land Mobile Radios providing instant voice communications. It's rugged and loud design makes it the perfect solution for the most demanding environments.

For more information about our BluSkye® Speaker Mic please email us at [email protected].

BluSkye® from Stone Mountain. The loudest, most rugged Bluetooth Speaker Mic for smartphones, tablets, Windows devices and Land Mobile Radio platforms - Prov...

09/11/2020

"Our enemies have made the mistake that America's enemies always make; they saw liberty and thought they saw weakness, and now they see defeat."

-George W. Bush

07/22/2020

Stone Mountain's PTT Speaker Mics turn smartphones and tablets into 2 way radios without having to touch your device - providing instant voice communications with unlimited range over your cellular network. Never miss a call and eliminate the hassle of having to pull your device from your carry case or out of your pocket!

https://rb.gy/3bo2jk

07/17/2020

"We operate in an extremely loud and environmentally hostile environment and needed a wired remote speaker mic that was rugged, waterproof, extremely loud and reliable. After evaluating several product options, we chose the Elite RSM by Stone Mountain. The Elite met or exceeded all our requirements and expectations. The unit maintains loud and clear audio well above the ambient noise level." - Brian Webb, Concrete Supply Co.

BE HEARD - with the Elite series RSM from Stone Mountain.

06/05/2020

On June 6, 1944, 35 young men from our hometown of Bedford, VA stormed the beaches of Normandy. By the end of the day, 19 of them were dead.

We are incredibly proud to be a part of this community that has sacrificed so much for our freedom. We will never forget.