Current price
$1,599.99 current base
Checked todayDirect source1 evidence itemT2 transmitter, metal band and accessories can raise the total. Install current software before diving. Confirm the checkout price and package before paying.
Garmin · Descent Mk3i 51 mm
Descent Mk3i 51 mm
A 51 mm AMOLED dive computer and multisport watch with air integration, SubWave messaging, maps, flashlight and long battery lifeMarket statusCurrent large premium air-integrated multisport watchChecked Aug 15
Reference price$1,599.99 current baseCurrent Garmin U.S. comparison
Product cyclecurrentRelease history under review
EvidenceWell supported5 publishers · 3 independent
Next full checkAug 22, 2026Price checks run sooner
01
Ready to buy
Confirm the exact machine and complete setup
The retained reference is $1,599.99 current base. T2 transmitter, metal band and accessories can raise the total. Install current software before diving. Confirm the current configuration, included parts, support path, return terms and the work that must be preserved before ordering.
Buying stageMarket familiarity
02
Current market
The facts that change the ownership choice
Each line carries its own check date because price, software, specifications, and product cycle do not age at the same speed.
QuestionCurrent answerFreshnessBasis
Market branch
Premium large multisport dive watch
Checked todayOur synthesis2 evidence itemsPurchase boundary
Full value depends on using Garmin's topside system and often adding one or more $499.99 T2 transceivers
Checked todayOur synthesis2 evidence itemsDive rating
200-meter dive-rated case
Checked todayDirect source2 evidence itemsAir integration
T2 pressure and SubWave messaging support
Checked todayDirect source2 evidence itemsBattery
Up to 66 hours retained dive-mode reference
Checked todayDirect source2 evidence itemsSoftware
Current support record includes version 25.21 in April 2026
Checked todayDirect source2 evidence itemsCurrent verdict
The strongest dive and multisport hybrid
Checked todayOur synthesis7 evidence itemsMk3i 51 is compelling for a diver who wants one serious watch above and below water and accepts the price and interface density.
03
Other paths
The alternatives change what the Descent Mk3i 51 mm is worth
These are not generic competitors. Each one represents a different way to buy into the same market.
01lower upfront
Garmin
Descent Mk3i 43 mm
$1,399.99 current base- Best fit
- Compact premium multisport air integration
- Tradeoff
- The smaller body gives up display area and substantial battery life relative to Mk3i 51
02ownership
Shearwater
Perdix 3
$1,295 current base- Best fit
- Large-screen technical flagship
- Tradeoff
- A full technical mode set is not a reason for an untrained recreational diver to configure technical gases or decompression behavior independently
04
What changed
The product has a history
Older observations stay in the ledger when the current view changes. That lets a buyer tell the difference between an old complaint, an active issue, and a problem that was corrected.
- notable
Current market position retained
Descent Mk3i 51 mm was checked against its manufacturer record, the current category collection and the nearest ownership alternatives.
Price record
The price history starts here
Each amount stays tied to its source and capture date. Conflicting prices remain visible until the seller resolves them.
- $1,599.99 current base
Current reference priceA structured timeline will begin with the next source capture
05
Owner experience
What repeats after the purchase
Owner discussion repeatedly returns to topside value and underwater interface density rather than specifications alone.
These are self-reported experiences from a changing mix of owners, conditions and software versions. They identify questions to test, not a failure rate.SignalWhat owners reportOur readEvidence
Topside value and underwater interface density
Divers repeatedly distinguish large-screen readability, watch form, owning a regulator for air integration, rental habits, backup gauges and the value of trying computers in person.
The price is easier to defend when the Garmin replaces a separate daily multisport watch and the diver practices its button workflow.
1 evidence record06
Sources
Why we believe the current view
The page separates what a source states directly from what we conclude across sources.
01Descent Mk3i 51 mm product recordGarmin · identity
Garmin identifies Descent Mk3i 51 mm as a 51 mm AMOLED dive computer and multisport watch with air integration, SubWave messaging, maps, flashlight and long battery life
- Source type
- manufacturer
- Content hash
- ef9ad65b1b19f88a…
- Use
- store excerpt
02Descent Mk3i 51 mm current offerGarmin · price
$1,599.99 current base was retained from the current manufacturer or authorized-market record with package and availability qualifications kept visible.
- Source type
- manufacturer
- Content hash
- 043e383ef058b85d…
- Use
- store snapshot
03Descent Mk3i 51 mm support and specificationsGarmin · specification
Garmin publishes setup, compatibility or service material that makes this purchase boundary explicit: Full value depends on using Garmin's topside system and often adding one or more $499.99 T2 transceivers
- Source type
- support
- Content hash
- 68e93c03674c3c7b…
- Use
- store excerpt
04Current air-integrated computer collectionShearwater · price
The current collection preserves the live price and role ladder from Peregrine TX and Tern TX through Perdix 3, Petrel 3 and rebreather monitors.
- Source type
- retailer
- Content hash
- 81d0f231bce4a8d7…
- Use
- store snapshot
05Garmin Descent Mk3i in-water reviewDIVE Magazine · specification
An in-water editorial review separates display, messaging, transmitter dependence, watch functions and price after real dives.
- Source type
- editorial
- Content hash
- 48d6026640941d86…
- Use
- store excerpt
06Suunto Ocean in-water reviewTechRadar · consensus
Club dives and daily wear show how display, battery, app, tank integration and topside features shape a modern dive-watch purchase.
- Source type
- editorial
- Content hash
- fd6689531ca0d830…
- Use
- store excerpt
07Current Tern TX, Peregrine TX and Suunto owner comparisonr/scuba · consensus
Divers repeatedly distinguish large-screen readability, watch form, owning a regulator for air integration, rental habits, backup gauges and the value of trying computers in person.
- Source type
- community
- Content hash
- 0216bf4c5de26132…
- Use
- store excerpt
08Descent Mk3i 43 mm alternative recordGarmin · alternative
Descent Mk3i 43 mm represents the compact premium multisport air integration branch at $1,399.99 current base.
- Source type
- manufacturer
- Content hash
- b88c28a22bfbfef5…
- Use
- store excerpt
09Perdix 3 alternative recordShearwater · alternative
Perdix 3 represents the large-screen technical flagship branch at $1,295 current base.
- Source type
- manufacturer
- Content hash
- 763058c4dcc88cd8…
- Use
- store excerpt
The manufacturer record, current market collection, support material and independent category evidence were checked on August 15, 2026. The checkout package and regional support path still need verification. Owner reports are retained as bounded experience, not a reliability rate.
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