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Retevis Matetalk B4 FRS Portable Free-Licence Two Way Radio with Noise Reduction

Retevis B4 Two-Way Radio combines AI noise reduction, 19-hour battery life, 6-language support, and rugged portability for demanding work and play. Whether you’re managing a construction site, hosting a bar, or hiking a trail, the B4 keeps your team connected, clear, and in control.

AI-powered Noise Reduction

Jobsite walkie talkies trained on 100,000+ data samples using the MTFGRU model; reduces jackhammer roars and heavy machinery din; with a 25dB SNR boost; your crew hears orders clearly; even in chaotic environments.

Digital Two-Way Noise Reduction VS. Analog One-Way Noise Reduction

Clear Communication

At the working site,  the two-way radio's AI filters wind; river noise; and distant traffic; enjoy clear communication around the fire without shouting over nature’s chaos.

6 Languages Prompt

English; German; Spanish; French; Italian; and Russian; whether you're overseeing a multinational team at a construction site or coordinating repair shops in different countries; commercial walkie talkies break down language barriers.

Emergency Alarm

One button on 2 way radio triggers both local and remote alarms; alerting your group to dangers; whether hiking solo or with a team; this feature ensures help is just a button-press away.

Walkie Talkies with Shoulder Mic

The speaker microphone with IP54 waterproof; the capacitive electret microphone ensures that your voice cuts through the loud noise of machinery; hammering; and shouting; ensuring clear communication with your team.