The Suunto D5 and the Shearwater Peregrine are two of the most popular mid-range wrist dive computers. Both feature color screens, Bluetooth connectivity, and multi-gas capability. But they take different approaches to algorithms, user interface, and feature sets. This comparison breaks down where each excels.
Specifications Compared
| Spec | Suunto D5 | Shearwater Peregrine |
|---|---|---|
| Algorithm | Suunto RGBM | Bühlmann ZHL-16C with GF |
| Display | Color LCD, touchscreen | Color LCD, 2-button |
| Air integration | Wireless (Suunto Tank POD) | Wireless (Shearwater Swift, Peregrine TX) |
| Gas mixes | Up to 3 (nitrox) | Up to 4 (nitrox) |
| Dive modes | Air, nitrox, gauge, freedive | Air, nitrox, gauge, freedive |
| Battery | Rechargeable, ~6–12 hrs dive | Rechargeable, ~30+ hrs dive |
| App | Suunto App (Bluetooth) | Shearwater Cloud (Bluetooth) |
| Daily wear | Yes (watch mode) | No (dive-only design) |
| Conservatism | Low / Medium / High | Gradient factors (adjustable) |
Display & Interface
The Suunto D5 uses a touchscreen, which works well on the surface but is disabled underwater (buttons take over). The interface is intuitive and app-like. The Shearwater Peregrine uses two physical buttons with a menu system that's simple and fast. The Peregrine's screen is larger and brighter — arguably the most readable display in its price range. Most divers find the Peregrine easier to read at depth, while the D5 feels more modern on the surface.
Algorithm & Control
This is the fundamental difference. The D5 runs Suunto's RGBM algorithm with three conservatism levels (Low, Medium, High). The Peregrine runs Bühlmann ZHL-16C with fully adjustable gradient factors. For recreational divers, the practical difference is minor. For divers who want to understand and control their decompression math precisely, the Peregrine's gradient factor system offers far more transparency and granularity.
Battery Life
The Peregrine's 30+ hour dive battery life is exceptional — roughly three times the D5's runtime. On a liveaboard trip with four dives per day, the Peregrine can last an entire week without charging. The D5 needs charging every one to two days of heavy diving.
Which to Choose
Choose the Suunto D5 if you want a daily-wear dive watch with a touchscreen, social sharing features, and a sleek design you'll wear outside of diving.
Choose the Shearwater Peregrine if you prioritize screen readability, battery life, gradient factor control, and a dive computer built by a company that only makes dive computers. The Peregrine is the computer most dive professionals recommend as a "buy once, keep forever" recreational computer.
Shearwater Peregrine
Huge, bright color display. The simplest menus in diving. Gradient factor control. 30-hour battery. The recreational dive computer that dive professionals keep recommending.
Suunto D5
A stylish dive computer that doubles as a daily watch. Touchscreen interface, wireless air integration via Tank POD, and the Suunto App for social dive logging. Customizable watch faces and strap options.