1 / 7Garmin Descent G2 46 mm dive computer and smartwatch
The Garmin Descent G2 is a watch-style dive computer and smartwatch for divers who also want sports tracking and everyday health features. Its 1.2-inch AMOLED display, multi-GNSS dive entry and exit marking, and mode-specific battery claims are aimed at recreational through technical diving, while its compact screen may not suit everyone.
At a glance
- Designed for recreational, advanced, technical and freediving, as well as pool apnea.
- Multi-GNSS support is described for marking dive surface entry and exit points.
- Dive readiness draws on sleep, stress, recent exercise and dives.
- Smart features include notifications with a compatible phone, Garmin Pay with a supported bank, and Connect IQ personalisation.
- The manufacturer claims up to 27 hours in dive mode and up to 10 days in smartwatch mode.
Reference price: £569.99
Price checked: 14 Nov 2026
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Pros and cons
Pros
- Combines a dive computer with sports tracking, training tools and smartwatch functions.
- On-device dive logs can be reviewed in the Garmin Dive smartphone app.
- The stated multi-GNSS entry and exit marking can help divers review where a dive began and ended.
- A listed 4 GB of storage is available for on-watch data.
Cons
- The 1.2-inch screen may feel small to buyers who prefer a larger display, a concern also reflected in mixed customer feedback about screen size.
Technical specifications
17 specifications| Brand | Garmin |
|---|---|
| Model | Descent G2 |
| Screen size | 1.2 Inches |
|---|---|
| Screen technology listed | AMOLED |
| Wireless connection listed | Bluetooth |
|---|
| Battery life listed | 10 days |
|---|---|
| Battery type | Lithium Ion |
| Form factor | Round |
|---|---|
| Dimensions listed | 45 x 45 x 15 millimetres |
| Weight listed | 2.3 Ounces |
| Water resistance listed | Waterproof |
|---|---|
| Storage listed | 4 GB |
| Dive rating claimed | 10 ATM |
|---|---|
| Dive modes listed | recreational, advanced, technical, freediving and pool apnea |
| Satellite positioning | Multi-GNSS support |
| Health features | 24/7 wrist-based heart rate, Pulse Ox, Body Battery energy monitoring, sleep score |
| Dive log use | Store dive logs on device, and review in the Garmin Dive smartphone app |
What to know before buying
Listing details to confirm
Battery life is mode-specific: the manufacturer claims up to 27 hours in dive mode and up to 10 days in smartwatch mode. Health metrics are estimates, this is not a medical device, and Pulse Ox availability varies by country. Dive readiness is an insight based on sleep, stress, recent exercise and dives. Smart notifications require a compatible smartphone, and Garmin Pay requires a supported bank. The listing also gives a generic 10-day battery-life figure, while a feature claim specifies separate dive and smartwatch limits. Its case-material field says “Fiber reinforced plastic to the ocean”, which is unclear, while a feature claim says the housing, bezel and buttons use plastic from recycled ocean-bound sources. Check the exact material description and selected model details before purchase.
What’s in the box
Included- Descent G2
- Extra-long adjustment strap
- Charging/data cable
- Documentation
Who is it for?
A good fit for
- Divers wanting one watch-style device for multiple stated dive types and everyday smartwatch functions.
- Buyers who want sports tracking, training features and wrist-based wellness estimates alongside dive logging.
- Divers who can use a 1.2-inch display and value compact wrist sizing.
Less suited to
- Anyone who needs a larger dive-computer display.
- Anyone relying on wellness metrics as medical measurements, or needing Pulse Ox in a country where it is unavailable.
Customer reviews on Amazon
- 5 stars
82% 82% - 4 stars
7% 7% - 3 stars
3% 3% - 2 stars
4% 4% - 1 star
4% 4%
Customer feedback reports satisfaction with the dive-computer functions, battery life, features, versatility, screen readability underwater and data quality. The reported battery experience is consistent with the stated smartwatch-mode claim of up to 10 days, but that figure is not the dive-mode limit, which is stated separately. Opinions on compact size are mixed: some appreciate it on smaller wrists, while others find the screen too small. The generally positive rating distribution is encouraging, though aggregate ratings do not establish suitability for an individual diver.
Positive themes
- Customers report appreciating the dive-computer functions and versatility across recreational and advanced diving.
- Feedback highlights battery life, screen quality, features and data quality.
Mixed feedback
- Compact sizing suits some smaller wrists, while other customers say the screen is too small.
Frequently asked questions
How long does the Garmin Descent G2 battery last?
The manufacturer states up to 27 hours in dive mode and up to 10 days in smartwatch mode. Treat these as separate mode-specific claims, not one universal runtime.
Which types of diving does the Descent G2 support?
The listing names recreational, advanced, technical and freediving, plus pool apnea.
Can it record dive locations?
The manufacturer says multi-GNSS can mark surface entry and exit points. Dive logs can be stored on the watch and reviewed in the Garmin Dive smartphone app.
Does it work as an everyday smartwatch?
The listing includes smart notifications when paired with a compatible smartphone, Garmin Pay with a supported bank, and Connect IQ personalisation.
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