Introduction
If you are comparing the Shearwater Peregrine vs Teric, you are not alone. These two computers dominate the conversation for divers who want something better than the basic wrist units sold in resort shops. They come from the same manufacturer, share the same excellent screen technology, and both deliver the reliable algorithm performance Shearwater is known for. But they are designed for very different divers.
I have been teaching diving for over a decade and have logged hundreds of dives with both units strapped to my arm at the same time. The Peregrine has been on easy reef dives, and the Teric has been into caves and on deep trimix dives. This comparison comes from real use, not spec sheet reading. If you are deciding which one to buy, this will help you pick the right tool for the kind of diving you actually do.
At a Glance: The Key Differences
Before we get into the details, here is the short version. The Peregrine is a recreational computer with a full-color LCD, a simple button interface, and a rechargeable battery rated for about 40 hours. It handles air, nitrox, and up to three gas mixes. No trimix, no wireless tank pressure, no replaceable battery.
The Teric does all of that and adds trimix support, CCR integration, wireless air integration, a user-replaceable battery, and a touchscreen you can turn on or off. It costs roughly two and a half times as much.
Quick side-by-side:
- Price: Peregrine ~$450, Teric ~$1,150
- Display: Both have full-color LCD, but Peregrine has a slightly larger screen
- Battery: Peregrine internal rechargeable (~40 hours), Teric user-replaceable rechargeable (~30 hours)
- Wireless AI: Peregrine none, Teric supports up to four transmitters
- Trimix: Peregrine no, Teric yes
- Interface: Peregrine four buttons, Teric buttons plus optional touch
The Teric is not a better computer than the Peregrine. It is a more capable computer for a specific type of diver. If you only dive recreationally on vacation, the Peregrine is the better choice. If you are building a technical dive kit, the Teric is the tool you need.
Display and User Interface
Both computers use the same underlying display technology. The colors are vivid, the numbers are sharp, and they are easy to read in bright sunlight or under a dark overhang. That is where the similarity ends.
The Peregrine has a larger screen. Not by a huge margin, but enough that it matters if your eyes are not what they used to be. The numbers are slightly bigger, the layout feels more spacious, and you do not need to squint to see your depth or no-deco limit. The trade-off is that the Peregrine is controlled by four buttons placed around the bezel. That works fine once you memorize the menu sequence, but it is not fast. You scroll through options one at a time.
The Teric uses buttons plus an optional touchscreen. The buttons are smaller but placed on the sides, which makes them easier to find with thick gloves. If you turn off the touchscreen, you navigate with the buttons and the digital crown. That is faster than the Peregrine for hopping between screens. You can jump from your gas data to the compass to the tissue loading graph in a few clicks. I find the touchscreen useful on the surface, especially when logging dives or adjusting settings. Underwater, it is hit or miss. If your gloves are thick or your hands are cold, the touchscreen does not always register. I keep it turned off during dives and rely on the buttons.
One thing worth noting: the Peregrine has a sapphire crystal, same as the Teric. Both resist scratches well over years of use.
If you are a newer diver who wants a clear, simple display, the Peregrine is easier to use. If you want fast menu navigation and already know how to manage a dive computer, the Teric is snappier once you get used to the interface.
Battery Life and Charging
Battery life is one of the biggest practical differences between these two computers. It might also be the deciding factor for divers who do frequent liveaboards or long dive trips.
The Peregrine uses an internal rechargeable battery that is sealed inside the case. Shearwater rates it for about 40 hours, and in real-world use that number is conservative. I have gone through a week of diving with two or three dives per day and the computer still showed over half battery at the end. If you do not use the backlight constantly, you can easily get through ten dive days without recharging. On a typical vacation, you charge it once and forget about it. The charging cable is a magnetic connector that snaps onto the back. It is simple and works reliably.
The Teric has a user-replaceable rechargeable battery. That is a huge advantage if you are doing technical dives that run the computer for hours at a time. You can carry a spare battery in your save-a-dive kit and swap it out if needed. But the Teric battery life is shorter. Shearwater says about 30 hours, but some users report closer to 25 hours with the screen brightness turned up. I have seen the battery drain faster on dives where I use the backlight heavily, which is common on night dives or deep dives where light is low.
If you are on a liveaboard or a remote dive trip, here is how it plays out. With the Peregrine, you charge it once and do not think about it again. With the Teric, you need to charge it every two or three days, depending on how many dives you do. You can pack a spare battery, which adds cost but gives peace of mind. I keep a spare Teric battery in my dry bag and swap it out when I notice the charge dropping below 50%. That is extra weight and extra money, but it means I never have to cut a dive short because of battery anxiety.
Practical recommendation: If you want a set-it-and-forget-it experience, the Peregrine is hard to beat. If you are doing multi-dive tech days and want the ability to swap batteries in the field, the Teric is the only choice.
Diving Modes and Feature Set
This is where the two computers diverge most sharply. The Peregrine is designed for recreational divers. It handles air, nitrox, and up to three gas mixes. You can set your oxygen percentage between 21 and 99 percent. It runs the Bühlmann ZHL-16C algorithm with Gradient Factors, and it gives you a clear tissue loading bar graph. That is everything a recreational diver needs, and it does it without overwhelming you with menus.
The Teric does all of that and adds trimix support, CCR integration, and wireless air integration. If you dive with helium, the Teric automatically adjusts your deco obligations. If you are on a closed-circuit rebreather, the Teric can act as your primary computer. It also supports up to four wireless transmitters, so you can monitor your tank pressure, your buddy’s pressure, and your diluent and oxygen independently.
Here is the real-world breakdown. Most divers who read this article will never dive trimix. If you are doing wreck dives in the 60 to 80 meter range, or cave dives that require helium, you need the Teric. If you dive recreationally to 30 or 40 meters on air or nitrox, the Peregrine handles that perfectly. The Teric would be overkill and wasted money.
I have seen divers buy the Teric because they plan to get into tech diving someday. Some follow through. Many do not. If you are not actively doing technical dives within the next year, buy the Peregrine now and sell it later if you outgrow it. You will spend less money overall than buying a Teric you do not yet need.
The Peregrine is also simpler for teaching. When I have students using the Peregrine, I can focus on their dive skills instead of explaining menus. The Teric has more options, which means more things can go wrong if a diver touches a setting they do not understand.
Best for: Peregrine for recreational divers and instructors who teach recreational courses. Teric for tech divers, CCR divers, and anyone who wants full wireless integration.
Build Quality and Durability
Both computers feel solid in the hand. The Peregrine has a plastic case with a titanium bezel and a sapphire crystal. It is lighter than the Teric and sits comfortably on the wrist. I have dropped mine on concrete boat decks and knocked it against metal tank valves without damage. The plastic case can develop hairline scratches over time, but it does not affect function.
The Teric is heavier and thicker. The case is a more robust plastic with the same titanium bezel and sapphire crystal. It feels like a tool designed to survive harsh environments. I have seen the Teric take hits during cave diving that would have cracked a recreational computer. The extra thickness around the crown and the buttons gives it an advantage in impact resistance.
Both are rated to 120 meters, which is more than enough for any sport or technical diving. I suggest not testing that limit, but it is good to know the engineering is conservative.
One thing worth considering: the Peregrine is simpler to service. If something goes wrong, Shearwater can replace the entire unit at a reasonable cost. The Teric has more components, which makes repairs more involved. That is not a common issue, but it matters for divers who keep their computers for five or ten years.
Wireless Connectivity and Integration
This is probably the most concrete deciding factor for many divers. The Teric integrates with wireless transmitters that screw into your first stage. It shows your tank pressure, your gas consumption rate, and your remaining bottom time based on your actual breathing rate. You can monitor up to four transmitters simultaneously, which is useful on a rebreather or when diving with a buddy who is also running a Shearwater AI system.
The Peregrine has no wireless capability. You cannot connect a transmitter to it. If you want pressure data, you still read your analog submersible pressure gauge or use a console. That is not a dealbreaker for most recreational divers, but it is a non-starter for anyone who relies on air integration. For divers who prefer a hose-less setup, the Shearwater Teric wireless transmitter is a key upgrade to consider.
Here is my take after using both. For recreational diving, I prefer the simplicity of the Peregrine without AI. I check my SPG periodically, and I know my gas consumption well enough. For technical diving, the Teric with wireless transmitters is extremely helpful. When you have multiple gases and deco obligations, seeing your actual pressure on the same screen as your tissue loading is a safety advantage.
If you want a clean, streamlined setup without hoses, the Teric is the only choice between these two. If you are fine with a hose and console, the Peregrine saves you a lot of money and clutter.
The Software Experience: Shearwater Cloud
Both computers sync to Shearwater Cloud, which is a decent logbook app. You can download your dive profiles, review your tissue loading, and track your gas consumption. The interface is not as polished as some dive log software, but it does the job.
The difference is in how they sync. The Teric uses Bluetooth. After every dive, the computer automatically pushes data to your phone or tablet. That is convenient if you want a quick review without cables. The Peregrine uses a USB cable or an optional Bluetooth dongle, which costs extra. I prefer the cable. It is more reliable, and I never have to worry about pairing issues or battery drain from Bluetooth.
For most divers, this is a minor consideration. You sync your computer when you get home or at the end of the day. Whether it takes thirty seconds or two minutes does not matter much. If you want the convenience of wireless syncing, the Teric has it built in. If you want a simpler, cheaper setup that still logs your dives, the Peregrine is fine.
Price and Value Proposition
The Peregrine retails for around $450. The Teric retails for around $1,150. That is a significant price gap. Here is what you get for the extra money: wireless air integration, trimix support, CCR compatibility, a user-replaceable battery, and a faster interface. If you need any of those things, the Teric is worth every dollar. If you do not, the Peregrine is better value.
I see a lot of divers buy the Teric because they think it is the flagship model and therefore the best. That misses the point. The Teric is the best for technical diving. For recreational diving, the Peregrine is actually better because it is simpler and has a larger screen. You are paying extra for features you will never use.
Here is a good way to think about it. If you do not know what trimix is, you do not need the Teric. If you do not own a rebreather, you do not need the Teric. If you are happy with a standard SPG, you do not need the Teric. The Peregrine will serve you well for years and still be a great computer when you eventually upgrade.
Best for: Peregrine for the vast majority of recreational divers. Teric for technical divers and anyone building a full AI tech kit.
Common Mistakes When Choosing Between These Two
Mistake one: buying the Teric because you think you will go tech. I see this constantly. A diver buys the Teric thinking they will start doing deep wrecks or caves next season. Then life happens, and they stay recreational. Now they have a computer loaded with menus they do not use and a battery that needs charging every few days. Buy the Peregrine first. If you actually go tech, sell it and buy the Teric later. You will save money overall.
Mistake two: choosing the Peregrine when you already dive tech. If you are currently diving trimix or using a rebreather, the Peregrine is not sufficient. It will not support helium, and it will not integrate with your transmitters. You need the Teric. Do not try to save money on the wrong tool.
Mistake three: ignoring battery life for your dive style. If you do liveaboards or long dive days, the Peregrine gives you more runtime between charges. If you are doing multi-day tech diving, the Teric’s replaceable battery is better. Do not assume the higher price means better battery. They serve different use cases.
Final Verdict: Peregrine vs Teric
Both of these computers are excellent. Shearwater makes reliable, algorithm-driven tools that divers trust. The decision comes down to what kind of diving you do.
If you are a recreational diver who dives on vacation or locally to recreational limits, buy the Peregrine. It has a beautiful screen, excellent battery life, and a simple interface that does not get in the way. It is the best recreational dive computer on the market at its price point.
If you are a technical diver who needs trimix, CCR support, and wireless air integration, buy the Teric. It is the best all-in-one tech computer on the market. It is expensive, but it replaces multiple devices and gives you clean data on your wrist.
If you are not sure which category you fall into, buy the Peregrine. It is less expensive, easier to use, and does not punish you for not needing advanced features. You can always upgrade later if you decide to go deeper.
For most divers, the Peregrine is the smarter choice. It does everything you need in a dive computer without the extra cost and complexity. Use the savings to buy more dives, better training, or a new regulator.
Check current pricing for the Shearwater Peregrine on Amazon.