Full review of the Shearwater Tern dive computer. Discover why this compact computer is the best choice for recreational divers seeking readability without breaking the bank.
To learn how to get the most out of your underwater equipment, discover the AquaExposure training program.
I am often asked if it is truly necessary to spend over a thousand euros to have a readable screen on a dive computer. A dive computer is not just a simple accessory, it is the critical tool that manages your decompression safety. Until now, at Shearwater, the AMOLED screen was reserved for the Teric, a very high-end and expensive model.
The Shearwater Tern changes things. By removing complex functions, such as Trimix or air management, which most divers do not need, the brand offers a compact, elegant device that is above all exceptionally clear. This review aims to confirm whether, beyond its attractive price, it lives up to the reputation for robustness of its predecessors.
| The Shearwater Tern establishes itself as a benchmark for demanding recreational divers. Here is our complete evaluation, based on our rigorous analysis grid. | Criterion | Score | What it means |
|---|---|---|---|
| O1 Algorithm & Decompression Stops | 5.0/5 | Maximum safety with the customizable Bühlmann ZHL-16C algorithm. | |
| O2 Air & Multi-Gas | 3.6/5 | Perfect for air and Nitrox, supporting up to 3 gas mixes. | |
| O3 Screen & Ergonomics | 4.4/5 | An AMOLED screen that cuts through the darkness, in a slim watch format. | |
| O4 Battery Life | 4.3/5 | Rechargeable wirelessly, ideal for a long diving weekend. | |
| O5 Connectivity & App | 5.0/5 | Perfect Bluetooth synchronization with Shearwater Cloud. | |
| O6 Compass & Instruments | 2.3/5 | No compass on this model, you will need to rely on an analog one. | |
| O7 Durability & Depth Rating | 3.8/5 | Mineral glass and a robust case certified to 120m. | |
| O8 Price & Customer Support | 4.6/5 | The best value for money currently available for a high-end color screen dive computer. |
Overall Score: 4.2/5
As with all models from this brand, safety is never an option. This device provides you with all the information you need to understand your decompression process. It uses the Bühlmann ZHL-16C algorithm with adjustable Gradient Factors, offering a complete range of adjustments. The detailed display of decompression information is impeccable. Haptic alerts, in the form of vibrations, are a real plus for ensuring you don't miss any alarms underwater. The historical reliability of this algorithm at Shearwater is well established.### Air and Multi-Gas Capabilities
The Tern is designed for recreational diving and performs exceptionally well in this area. It handles air and Nitrox perfectly, allowing you to configure up to three different gas mixes. However, it does not support Trimix or rebreathers (CCR), a deliberate choice made to maintain an accessible price point and a streamlined interface. Importantly, this model does not offer wireless air integration, a feature reserved for its larger counterpart, the Tern TX.
The AMOLED display is at the heart of this device. The black is absolute, the colors are vibrant, which makes reading intuitive even in conditions of poor visibility. With a high resolution for its 1.3-inch size, the screen compensates for its small surface area with infinite contrast. The four-button navigation is clear, intuitive, and perfectly usable even with thick gloves. The display customization options are extensive, allowing each diver to organize information according to their preferences.
Shearwater excels in this area. Native Bluetooth allows for fast and seamless synchronization with the Shearwater Cloud app, which is a benchmark for digital dive logs. Firmware updates are easily performed over-the-air (OTA), ensuring that your computer always benefits from the latest improvements. Data export is open, facilitating integration with other dive log software.
This is where the Tern makes compromises. It lacks a digital compass, which explains its lower score in this category. Therefore, you will need to equip yourself with a traditional analog compass. On the other hand, it integrates a very precise temperature sensor and offers a complete freediving mode, which will delight enthusiasts of this discipline.
The Tern's price point is strategically positioned. It offers the best value for accessing AMOLED technology from Shearwater. The brand's after-sales service is an absolute benchmark in the diving industry. With regional expert centers and a well-documented out-of-warranty replacement policy, you are investing in peace of mind. The standard 2-year warranty further enhances this positive picture.
Shearwater's after-sales service is an absolute benchmark in the diving industry. The brand has built a reputation for excellence thanks to expert regional centers that can provide quick and effective assistance. The process for out-of-warranty replacements is clearly documented, offering a level of transparency and peace of mind that is rare. To date, no significant weaknesses have been identified regarding Shearwater's support, which further reinforces confidence in this investment. This is a key factor for a safety device as crucial as a dive computer.
If the Shearwater Tern has piqued your interest, know that the Shearwater range offers other models, each with its own specific features. For integrated air management and a digital compass, you might be interested in the Shearwater Tern TX. For technical divers or those seeking a more compact format, the Shearwater Perdix 2 or the Shearwater Teric might meet your needs. Each model is designed with the same rigor and safety philosophy that characterize the brand.
To compare this computer with other models, see our dive computer comparison tool.© 2026 AquaExposure. All rights reserved. Reproduction is prohibited without authorization.
The basic Tern does not have a digital compass or wireless air integration. This is the only difference between it and the TX model.
Yes, like all of the new Shearwater models, it has a complete and dedicated freediving mode.
No, the Shearwater Tern is designed for recreational diving and does not support trimix or advanced air management functions, which are essential features for technical diving.
