Suunto D4f
Black
Dive computer for freediving, snorkeling and spearfishing. Made in Finland.
Specialized freedive computer
Suunto D4f is a light yet robust freedive computer, that makes underwater sports enjoyable. When diving, the D4f displays your present and maximum depth and calculates dive time and surface intervals for you, allowing you to fully concentrate on exploring the underwater world. Use the apnea timer to improve your breathing technique. After the dive you can browse the details of your dive from the logbook. The light-weight case with stainless steel bezel and mineral crystal glass make Suunto D4f not only a trusted tool when exploring the depths, but also looks good wearing day to day.
The Suunto D4f Black comes with a comfortable elastomer strap. The USB cable for uploading your dives to DM5 and Suunto Movescount is sold separately.
PRODUCT HIGHLIGHTS
- Ideal for freediving, snorkeling and spearfishing
- Apnea timer
- Maximum depth 100m
- Light-weight
Specifications

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Measurements48.6 x 43.8 x 16 mm / 1.91 x 1.72 x 0.63 "
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Weight86 g / 3.03 oz
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Bezel material:Stainless steel
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Glass material:Mineral crystal
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Case material:Composite
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Strap material:Elastomer
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What's in the box?Suunto D4f Black with black elastomer strap, scratch guards (2 pcs), safety leaflet, quick guide and dive legal leaflet with warranty information, Suunto logo sticker
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Country of manufactureFI
- Freediving mode
- Innovative apnea timer
- Stop watch
- Water resistance up to 100 m (328 ft)
- Easy-to-read matrix display
- Mineral crystal glass and stainless steel bezel
- Updateable firmware
- Detailed graphical logs and dive data on your PC/Mac using Suunto DM5 software
Technical specifications
GENERAL
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Bezel material:Stainless steel
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Glass material:Mineral crystal
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Case material:Composite
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Strap material:Silicone
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Weight86 g / 3.03 oz
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Water resistance100 m (ISO 6425, EN 13319)
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Battery life 100 dives/year1.5 years
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Battery typeCR 2450
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Time, date✔
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Alarm clock1 daily alarm
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Dual time✔
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Stopwatch timer✔
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LanguagesEN
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Backlightelectro-luminescent
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Configurable backlightduration: off, 5, 10, 20, 30, 60 s
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Display typematrix
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Display resolution49 x 22
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Battery indicatorlow battery indicator
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Metric and imperial units✔
BATTERY LIFE
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In time mode2 years
CONNECTIVITY
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Data transferUSB cable
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Connectivity (between devices)inductive
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Compatible with DM5✔
PHYSICAL SPECIFICATIONS
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Operating temperature0° C to +40° C / +32° F to +104° F
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Storage temperature-20 ° C to +50 ° C / -4° F to +122° F
DIVING FUNCTIONS
BASIC
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Maximum operating depth (EN 13319)100 m / 328 ft (EN 13319, ISO 6425)
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Freedive✔
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Dive time0 to 999 min
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Surface time0 to 99 h 59 min
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No fly time✔
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Ascent time display0 - 199 min (- - after 199)
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Timer✔
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Logbook memory~140 h (20 s sampling rate)
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Logbook bookmarks✔
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Logbook sampling rates1, 2, 5 s
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Dive historylifetime
FREEDIVING
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Apnea timer (O2/CO2 tables)✔
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Freedive number✔
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Freedive day history✔
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Freedive total historylifetime
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Depth notifyyes (5)
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Surface time notify✔
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Depth alarm✔
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Dive time alarm✔
OUTDOOR FUNCTIONS
WEATHER
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Temperature display range-20° C to +50° C (+/- 2° C) / -9° C to +122° F (+/- 3.6° F)
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Temperature resolution1° C / 1.5° F
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Temperature✔
TRAINING FUNCTIONS
SPEED AND DISTANCE
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Chrono✔