Retevis RM20 VHF Marine Radio vs Deeper Chirp+ 2 Castable and Portable Gps Enabled Fish Finder with Extended Batt
Updated August 2026 — The Retevis RM20 is ideal for communication and safety, while the Deeper Chirp+ 2 excels in fishing technology. Choose based on your primary needs.
The Retevis RM20 is ideal for communication and safety, while the Deeper Chirp+ 2 excels in fishing technology. Choose based on your primary needs.
Why Retevis RM20 VHF Marine Radio is better
Price
Retevis RM20 is cheaper at £162.99.
Waterproofing
Retevis RM20 has IP67 rating for better water resistance.
Communication
Retevis RM20 is designed for maritime communication.
Why Deeper Chirp+ 2 Castable and Portable Gps Enabled Fish Finder with Extended Batt is better
Fishing Features
Deeper Chirp+ 2 offers advanced sonar and depth mapping.
Battery Life
Deeper Chirp+ 2 lasts up to 15 hours on a charge.
Connectivity
Deeper Chirp+ 2 connects to smartphones for enhanced functionality.
Overall score
Specifications
| Spec | Retevis RM20 VHF Marine Radio | Deeper Chirp+ 2 Castable and Portable Gps Enabled Fish Finder with Extended Batt |
|---|---|---|
| Brand | Retevis | deeper |
| GPS | Yes | Yes |
| Weight | Light | Light |
| Smart App | No | Yes |
| Target Separation | N/A | 1 cm |
Dimension comparison
Overview of the Retevis RM20 VHF Marine Radio
The Retevis RM20 VHF Marine Radio is designed primarily for maritime communication, offering essential features for safety on the water. Priced at £162.99, it provides a reliable means of communication with a loud volume of 90-110 dB, ensuring clear calls even in noisy conditions. This radio includes built-in GPS functionality, allowing users to send and receive location information, which is crucial for navigation and safety on the sea. Additionally, it meets IP67 waterproof standards, making it resilient to harsh marine environments, as it can withstand submersion under 1 metre of water for up to 30 minutes.
Overview of the Deeper Chirp+ 2 Castable Fish Finder
The Deeper Chirp+ 2 is a high-tech, castable fish finder priced at £249.99, aimed at enhancing fishing experiences. With three beam frequencies and a scanning range from 15 cm to 100 m, it delivers precise data and clarity, helping anglers locate target species effectively. This device stands out for its ability to map out waters and create depth profiles, providing users with valuable insights into their fishing environment. Additionally, it offers a robust battery life of up to 15 hours and can be charged fully in just 2 hours, making it a powerful companion for extended fishing trips.
Functionality Comparison
In terms of functionality, the Retevis RM20 focuses on communication and safety features essential for maritime activities. Its built-in GPS and DSC capabilities allow it to send distress signals and share location data, making it a vital tool for emergency situations. Conversely, the Deeper Chirp+ 2 excels in fishing-specific functionalities, offering detailed sonar readings and depth mapping. Its ability to generate a Wi-Fi signal for smartphone connectivity enhances usability, particularly for those using mobile apps to track their fishing activities. Thus, the choice between these two products hinges on the intended primary function: communication versus fishing assistance.
Battery Life and Charging
Battery life is a significant factor when considering marine electronics. The Retevis RM20 does not specifically mention battery life but is designed for continuous use in communication settings. Meanwhile, the Deeper Chirp+ 2 boasts a powerful battery that can last up to 15 hours on a full charge, which is particularly advantageous for lengthy fishing trips. Furthermore, the Deeper can be fully charged within just 2 hours, ensuring minimal downtime. This suggests that for prolonged use, especially in fishing scenarios, the Deeper offers a more adaptable and convenient solution.
Durability and Water Resistance
Durability is crucial for any marine product, and both devices are designed with this in mind but for different purposes. The Retevis RM20 is rated IP67 waterproof, meaning it can be submerged in water up to 1 metre deep for 30 minutes, providing reassurance against accidental immersion. On the other hand, while the Deeper Chirp+ 2 does not specify its water resistance rating, its design as a castable fish finder suggests it is built to withstand splashes and brief submersions in water. However, for serious marine conditions, the Retevis’s robust waterproofing may provide a better choice for safety-conscious users.
Connectivity and Compatibility
Connectivity options differ significantly between the two products. The Retevis RM20 is primarily a standalone marine radio, meaning it operates independently without requiring external devices for its core functions. In contrast, the Deeper Chirp+ 2 is designed to connect with smartphones via its generated Wi-Fi signal, allowing for comprehensive data access through the Fish Deeper app. This app integration enables users to log catches, create maps, and access various features that enhance the fishing experience. Therefore, if connectivity and the ability to use technology for enhanced fishing are priorities, the Deeper offers a more modern solution.
Target Audience
The Retevis RM20 is aimed at boaters who require a reliable communication device for safety and navigation. Its features make it particularly suitable for those who frequently venture out to sea and need to maintain contact with others or signal for help in emergencies. In contrast, the Deeper Chirp+ 2 targets anglers seeking to maximise their fishing success through technology. Its advanced sonar capabilities and mapping functions cater to serious fishermen looking to improve their catch rates and understand underwater environments better. Thus, the target audience for each product is distinctly different, catering to specific needs within marine activities.
Which should you buy?
Choosing between the Retevis RM20 VHF Marine Radio and the Deeper Chirp+ 2 ultimately depends on your specific needs. If your primary concern is communication and safety on the water, the Retevis RM20, with its robust waterproofing and GPS capabilities, is the clear choice at £162.99. However, if you are an angler seeking to enhance your fishing experience with detailed sonar data and depth mapping, the Deeper Chirp+ 2 at £249.99 provides advanced features that can significantly improve your fishing success. Therefore, assess your priorities: safety and communication versus fishing technology, and choose accordingly.
versusfinder.com is a participant in the Amazon Services LLC Associates Programme and the Amazon EU Associates Programme. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

