Q1: Why is a floating design important for a marine VHF radio?

A1: Because a radio could easily fall overboard while boating. A floating design ensures that the device stays on the water surface, making it retrievable. This avoids loss of communication — critical for safety, especially in emergency situations. The product achieves this with an orange-core floating design.

Q2: When would you use the 1 watt setting vs the 6 watt setting on this radio?

A2: Use 1 watt when communicating at short range (nearby boat or harbor) to conserve battery, reduce interference, and avoid unnecessary high power. Use 6 watts when you need long-range communication — for example when you’re farther from shore, on open water, or need to reach distant vessels or base stations.

Q3: What safety-related features does this radio offer beyond just voice communication?

A3: It offers built-in access to weather channels and emergency alerts (e.g., via NOAA weather radio), instant emergency channel access (Channel 16/9), memory scan and tri-watch (monitoring multiple channels), and a noise-cancelling microphone for clearer communication even in windy or noisy conditions. These features help ensure you receive timely weather warnings or distress calls, and that you can respond or reach out when necessary.

Cobra MR HH350 FLT Handheld Floating VHF Marine Radio - 6 Watt, Submersible, Noise Cancelling Mic, Backlit LCD Display, NOAA Weather, and Memory Scan, Grey

Key Specifications

Product Dimensions

2.09"D x 2.66"W x 4.75"H

Item Weight

9.6 ounces

Voltage

3.7 Volts

Special features

Battery Saver Mode

Other display features

Wireless

Batteries

1 Lithium Polymer batteries required. (included)

Reviewed by 3225 people this week!

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4.4

3225 reviews

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Cobra MR HH350 FLT Handheld Floating VHF Marine Radio - 6 Watt, Submersible, Noise Cancelling Mic, Backlit LCD Display, NOAA Weather, and Memory Scan, Grey

Name: Cobra MR HH350 FLT Handheld Floating VHF Marine Radio - 6 Watt, Submersible, Noise Cancelling Mic, Backlit LCD Display, NOAA Weather, and Memory Scan, Grey
Brand: COBRA
SKU: B00AJVMVQQ
Price: 139.95 USD
Availability: InStock
Rating: 4.4 (3225 reviews)

The Cobra MR HH350 FLT is a handheld marine VHF radio designed for use on boats and other watercraft. It provides voice communication over VHF frequencies, with adjustable power levels (1, 3, or 6 watts) to cover short- or longer-range communications. The radio is built to be submersible (waterproof), floats if dropped overboard (thanks to an orange-core design), and has features like a noise-cancelling microphone, a backlit easy-to-read display, memory scan, NOAA weather channels, and emergency alert capabilities.

Free Shipping

2-Year Warranty

30-Day Returns

Key Features

Noise-Cancelling Microphone - When embarking on a marine adventure, you need a fixed-mount marine radio for communication and safety. Our noise-cancelling microphone blocks background noise for crystal clear conversations.

6 Watt VHF – This radio provides the ability to customize your conversations when there are days you spend on the water further from shore. Select between 1, 3 and 6 watts for short- and long-range communication.

Backlit Plus Floats - This marine VHF radio is backlit and has an easy-to-read orange display for higher visibility in all conditions. The orange core floating design also makes it easier to retrieve your radio if dropped overboard.

USA, Canada & International Channels – Maximum coverage wherever you go. This VHF marine radio allows operation on any of the three different channel maps established for these areas.

NOAA Weather & Emergency Radio - Be prepared and never surprised when it comes to changes on the water. Get 24-hour updates on threatening weather conditions, emergencies, and incoming hazards with built-in NOAA Weather radio channel.

Available Colors

Grey

+ more

Available Styles & Variants

HH350 Grey

Key Considerations

Reliability & Redundancy: Marine radios are often the primary communication tool at sea — reliability under harsh conditions (water, salt, vibration) is vital. Redundant features (e.g., multiple power settings, waterproofing, floating) increase safety.

Transmission Range & Power Management: Ability to pick different power levels allows efficient battery usage and appropriate range depending on distance to shore or other vessels. Overpowering drains battery; underpowering may fail to reach needed range.

Waterproofing / Submersibility & Buoyancy: On watercraft, risk of dropping into water is real. A radio must resist water ingress (rain, spray, waves) and ideally float for recovery.

Usability under Stressful Conditions: Backlit display, noise-cancelling mic, intuitive channel access (especially emergency channel), scanning and memory functions help when visibility is poor, or under noise/weather stress.

Safety & Emergency Preparedness: Built-in access to weather channels, alarm tones, emergency channels, and quick access to distress frequencies is critical for safety at sea.

Because marine radios are used on water, being waterproof (ideally submersible) and buoyant is essential. Without these, if the radio falls overboard or gets splashed, you risk losing communication — which in emergencies can mean danger. The floating design also gives you a chance to retrieve it if dropped. The MR HH350 FLT is rated IPX7 / JIS7 (submersible) and has an “orange core floating design”.

These factors represent the most critical aspects that will impact your satisfaction with this product.

Customer Reviews

Nice and great warranty

2025-12-09T00:16:13.811Z

Works well, handy, easy to use. Mine stoped turn on two years in but the company replaced it under warranty with no questions asked.

andre

obra boat marine radio

2025-12-09T00:16:24.124Z

Got this for the boat. Love it. Works great no problems and keeps a charge for a couple days as well.

melissa

Frequently Asked Questions

Final Verdict

The Cobra MR HH350 FLT is a well-rounded handheld marine VHF radio — designed with the realities of boat use in mind: water exposure, potential for dropping overboard, varying communication distances, and unpredictable weather or emergencies. From a design and safety-theory perspective, it ticks many essential boxes: waterproofing/submersibility + buoyancy; flexible transmission power; usability in challenging conditions; and emergency/weather-alert features.