Suunto D4F

Suunto D4F is built for one thing: freediving done right. Light enough to forget you’re wearing it, tough enough to handle every session from the shallows to 100m depths, this is the watch that belongs on the wrist of every serious freediver and spearo.

During the dive it tracks your current and maximum depth, calculates dive time, and monitors your surface intervals so you can focus entirely on the hunt or the dive, not on the numbers.

The apnea timer helps you train your breathing technique and CO₂ tolerance, while depth and surface time alerts keep you honest about your recovery.

After the dive, a detailed logbook stores your session history.

The stainless steel bezel and mineral crystal glass mean it looks at home on your wrist in and out of the water. Simple, reliable, made for the underwater world.

It comes with a comfortable elastomer strap.
The USB cable for uploading your dives to DM5 and Suunto Movescount is sold separately.

Best for: Freediving, spearfishing, and snorkeling. Your first serious dive computer, or your most used one.

Product highlights

Ideal for freediving, snorkeling and spearfishing
Apnea timer
Maximum depth 100m
Light-weight

Suunto D4F

Measurements	48,6 x 43,8 x 16 mm / 1,91 x 1,72 x 0,63 “
Weight	86 g / 3,03 oz
Bezel material:	Stainless steel
Glass material:	Mineral crystal
Case material:	Composite
Strap material:	Elastomer
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

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 with your PC/Mac using Suunto DM5 software (USB cable sold separately)

Technical specifications

General

Bezel material:	Stainless steel
Glass material:	Mineral crystal
Case material:	Composite
Strap material:	Elastomer
Weight	86 g / 3,03 oz
Water resistance	100 m (ISO 6425, EN 13319)
Battery life 100 dives/year	1.5 years
Battery type	CR 2450
Time, date	✔
Alarm clock	1 daily alarm
Dual time	✔
Stopwatch timer	✔
Languages	EN
Backlight	Electro-Luminescent
Configurable backlight	Duration: Off, 5, 10, 20, 30, 60 s
Display type	Matrix
Display resolution	49 x 22
Battery indicator	Low Battery Indicator
Metric and imperial units	✔

Battery Life

In time mode	2 years

Diving Functions

Basic

Maximum operating depth (EN 13319)	100 m / 328 ft (EN 13319, ISO 6425)
Freedive	✔
Dive time	0 to 999 min
Surface time	0 to 99 h 59 min
No fly time	✔
Ascent time display	0 – 199 min (- – after 199)
Timer	✔
Logbook memory	~140 h (20 s sampling rate)
Logbook bookmarks	✔
Logbook sampling rates	1, 2, 5 s
Dive history	Lifetime

Freediving

Apnea timer (O2/CO2 tables)	✔
Freedive number	✔
Freedive day history	✔
Freedive total history	Lifetime
Depth notify	yes (5)
Surface time notify	✔
Depth alarm	✔
Dive time alarm	✔