Standard Horizon MH-73A4B Submersible Speaker Microphone for VHF Marine Radios

The Standard Horizon MH-73A4B is a compact, waterproof external speaker microphone designed for professional marine communication. Built to withstand harsh maritime environments, this speaker mic features IP57 submersible rating, allowing it to survive underwater immersion up to 3 feet for 30 minutes.

Key Features:

• IP57 waterproof rating - submersible to 3 feet for 30 minutes
• High-output speaker delivers loud, clear audio in noisy marine environments
• Rugged construction designed for professional maritime use
• Compact design for easy mounting and handling
• Compatible with all Standard Horizon VHF marine radios equipped with speaker mic connection
• Push-to-talk button for convenient radio operation

This external speaker microphone is ideal for mariners who need reliable hands-free communication while operating their vessel. The durable housing and waterproof design ensure dependable performance in wet conditions, while the powerful speaker ensures clear communication even in high-noise environments like engine rooms or open cockpits.