Suunto Oy is a company that manufactures and markets sports watches, dive computers, compasses and precision instruments. Headquartered in Vantaa, Finland, Suunto employs more than 300 people worldwide, and its products are sold in over 100 countries. Although globally active, the HQ is placed next to the factory, in which most of the work stages are still handcrafted. Suunto is a subsidiary of Amer Sports Corporation with sister brands Wilson, Atomic, Sports Tracker, Salomon, Precor, Arc'teryx and Mavic.

The word "suunto" can be translated as "bearing", "heading" or "direction".

The original logo of Suunto


In 1933 the company's founder, Tuomas Vohlonen, a surveyor by profession, applied for a patent for a unique method of filling and sealing a lightweight compass housing made entirely of celluloid and filled with liquid to dampen the needle and to protect it from shock and wear due to excessive motion. In 1935, Volhonen was granted a patent on his design, and it went into mass production a year later as the wrist-mount Suunto M-311. Although it wasn't the first portable liquid-filled compass, Vohlonen's design was compact and lighweight, enabling it to be easily worn on the wrist.

The company was entered in the trade register on February 4, 1936.

During World War II, Suunto introduced a compact liquid sighting compass, the M/40, for artillery officers and additional users needing a precision instrument for measuring an azimuth. The company grew rapidly after the war, supplying compasses and additional navigational instruments to both civilian and military markets.

After Tuomas Vohlonen died in 1939, his widow Elli Vohlonen ran the company until 1952, when she sold it to Paavo Kajanne, Aarne Mahnala and Veli-Jussi Hölsö, who additionally owned Redox Oy. At the quite end of 1970s they sold the company to Niemistö family, and in the beginning of 1990s Sponsor Oy bought the company and listed it in a stock exchance in 1995. In 1999 Amer Sports bought the company. Since March 2010 M. Sc. Mikko Moilanen has worked as CEO of the company.

In 1996 Suunto Oy acquired Recta SA, a Swiss compass manufacturer.

In the late 1930s Suunto Oy was located in the backyard building of Laivanvarustajankatu 8, Ullanlinna, Helsinki. In 1959 Suunto moved to Itämerenkatu 52, Ruoholahti, Helsinki. In 1969 the company moved to Juvan teollisuuskatu 8, Juvanmalmi, Espoo. Suunto Oy's headquarters moved to its current location in Valimotie 7, Tammisto, Vantaa in 2001.

Compass products

Suunto M-311

Suunto makes a wide variety of magnetic compasses, including the A and M series for general navigation, the Arrow series of compasses for competitive orienteering and KB (KäsiBussoli, engl. hand bearing compass), MB (=MatchBox) and MC (=Mirror Compass) lines for those requiring a professional-quality hand bearing compass. Suunto additionally produces the Recta lines of compasses, including DT baseplate series based on Suunto designs, the DS series of mirror sighting compasses, the Recta Clipper micro compasses, and the famous DP 'matchbox' series of military compasses invented by Recta in 1941. In 2009, Suunto discontinued the Swiss-made Recta DO series, moving all remaining production of Recta compasses from Biel, Switzerland to its production facility in Vantaa, Finland.

After acquiring Recta AG in 1996, Suunto incorporated the Recta Turbo 20 global needle system technology originally patented by Recta SA into a large number of of its own compass designs.

Since 1967, successors of M-40 have been offered as KB line, which consists of high-quality hand-bearing surveying compasses and inclinometers that are accurate to fractions of a degree. Traditionally made of a solid block of machined aluminum (some newer versions are in high-impact plastic housings), each KB compass contains a magnetised dial with calibration markings printed along its outer edge. A magnifying lens (KB-14) or prismatic sight (KB-77) is mounted at one end of the instrument with a crosshair providing a view of the disc, containing both forward and reciprocal bearings. In operation, the user divides their field of vision with the instrument, using the device's lens or prism to precisely measure the bearing of the object in view.

Having a tradition as a compass manufacturer, a large number of sport watches feature an electronic compass.

Global Needle System

The Suunto Global Needle System acquired from Recta as the Turbo-20 needle design, the conventional magnetised compass needle isn't used. Instead, the compass needle and magnet are built as separate units functioning independently from each other. The needle itself is fixed at its pivot by means of a double bearing, while the magnet rotates on a pivot with its own jewelled bearing. When attracted by the earth's magnetic field, the separate compass magnet absorbs the vertical force of the magnetic field, so that the inclination angle of the magnetic field (magnetic dip) can't tilt the needle, and the needle can no longer move in a vertical plane. This provides accurate readings of magnetic north in all magnetic zones of the world. The design additionally permits accurate readings with the compass tilted at angles of up to 20 degrees, while the use of a strong magnet causes the needle to settle extremely quickly, facilitating fast and accurate bearing/course measurements. This allows a user to obtain fairly accurate compass bearings even when moving, such as when hiking or travelling in a canoe.

Military models

The first military compass is M-34 delivered to Finnish Army after company founded. Since late 1980s Finnish Army has been using M89-60 exclusively manufactured for them. The most popular Suunto compasses used by armed forces around the world are MC-2, KB-14, A-30, M-9 and Clipper. These are at times adapted to local requirements. The MC-2 optical-sight (mirror) compass along with several additional Suunto compasses has been approved for issue to various NATO military forces, including Canadian Land Forces and several U.S. Special Forces units. The Recta DP-6 is still used by the Swiss Army.

Sport watches

Suunto makes multi-function electronic wristwatches such as the Core, Ambit, Vector, X-Lander, and X10, which can provide a variety of functions including compass bearings, altitude, training effect and even GPS location, depending on model. Suunto's multi-function electronic sport watches are made for different sports like sailing, golfing, hiking, mountaineering, alpine skiing and training.

G-, S-, T- and X-series of sport watches present an era when products with number 3 were described as entry level, number 6 as advanced and 9 as professional or high-end.

Suunto Vector was the world's first outdoor watch with ABC -functions. Released in 1998, it was available almost unchanged until it was discontinued in 2015. There was additionally a HR version of Vector, adding basic heart rate functions.

Suunto T6 with its later versions T6C (=Comfort belt) and T6D (=Dual belt) was one of the most advanced among heart rate monitors at the time of its release in 2004. It has, among additional features, rate-to-rate recording of heart rate, an altimeter based on air pressure, calculation of EPOC and training effect and support for external POD devices measuring speed and distance.

Suunto T3 (and its C and D versions) offered a large number of advanced training properties with much lower price than T6. The T4 (with additionally C and D versions) was close the same as the T3, but it added an electronic coach function. There were additionally T1 and T1C, a quite basic heart monitors in T-series. All T-series versions have gone out of production until 2012.

The M-series are a successor of T-series (except for T6). The M-series is more of an entry-level fitness lineup, while T-series was more aimed at sports training. The M-series include the basic heart monitors M1 and M2 (same watch, different heart rate strap) and M4 and M5 with more advanced functions, most of which electronic coaching for specific goals, such as weight control or improving physical performance. M4 went out of production in 2013.

Suunto Quest is a heart rate monitor aimed at sports training.

Suunto Ambit series, with the first version released in 2012 and later having included Ambit2 and Ambit3 lineups, are currently the most advanced of Suunto sport watches. These include GPS, ABC-functions, rechargeable battery, advanced training functions (in training functions Ambit is a successor of T6) and updatable software. User can modify a large number of of the functions of Ambit according to individual preferences. Different apps are additionally available, and users can additionally create their own apps. Limited in production amounts, Ambit2 S Black Limited Edition has been available from June 2015. Ambit3 adds smartphone connectivity as its main improvement. On September 29, 2015 Ambit3 Peak Nepal Edition was released. There is no additional difference between this and the normal version besides "Nepal Edition" text on the screen and a bit different bezel, but of every watch sold 25 euros are donated to Red Cross for humanitarian aid and rebuilding in Nepal. On January 7, 2016 Ambit3 Vertical was introduced. It adds more comprehensive tracking of vertical movement and introduces a redesigned body.

Suunto Core is an ABC-watch (A=altitude, B=barometer, C=compass). Since its release in 2007 there has been more than 30 different versions of Core. All of them have the same functions, but their external appearance differ. Most versions have plastic frames, but a few are made of aluminium and two of them are made of stainless steel. Most of the Core versions are no longer in production. There are a few limited, numbered editions of Core, such as Everest Edition (8848 made, in honour of Apa Sherpa's 21 ascents on Mount Everest), Red Bull X-Alps Edition (864 made, according to the length of the race), and Extreme Edition (3000 made). Suunto celebrated its 75th anniversary by releasing Anniversary Edition (in a few countries known as Alpine edition). Core All Black is often erroneously referred to as Core All Black Military or Core Military, but such nominations aren't official and such "military" versions don't exist. Core is said to have named after its including core elements needed in this type of watch.

Suunto Lumi is designed for women. It includes mostly same functions as Core. With special adapter, Lumi can be worn as a pendant. The Finnish word "lumi" translates as "snow". Published in 2007, Lumi was available only for a few years.

Suunto Traverse was released on October 1, 2015. The watch includes ABC-functions, GPS-receiver and heart rate monitoring. It includes a large number of of the functions of Ambit3 but however it is to be a follow-up of Vector and Core as an outdoor watch.

Earlier Suunto has been using Suunto ANT and ANT+ (based on the ANT network standard) protocols in wireless transmission of data. New releases beginning from Ambit3 series are based on Bluetooth low energy. The most basic heart rate monitors have been using analogue signal.

Although most of the sport watches are made in Finland, a few of the products are made in China by another manufacturer. These include T-series excluding T6, M-series, Quest, Lumi, Core and most of the PODs. Suunto has succeeded in its attempts in decreasing the production in China and increasing the proportion of Finnish manufacture.

Lifestyle watches

When publishing Kailash, Suunto additionally introduced their new approach, separating branches: together with Essential and Elementum, Kailash is now forming a new branch called Suunto 7R, which is a collection of lifestyle watches, while watches for sports and performing present a separate category.

Suunto Kailash was published on October 14, 2015. It includes GPS-receiver but premium appear is its main feature. This product is mainly designed for travellers. Kailash is additionally the first product of forthcoming Suunto world series.

On January 15, 2015 Suunto released Essential collection of premium watches. Functionally these resemble the Core but are made in Finland out of premium materials. Finnish design and manufacture is emphasized, creating contrast with China-made Core.

Suunto additionally manufactures the Elementum series of premium handmade wristwatches with specialised functions for outdoor (Terra), water activities (Aqua) and sailing (Ventus, discontinued).


Suunto provides software for interpreting recorded data from watches and for controlling them.

For T6 there was Training Manager software and for T3 and T4 there was Training Manager Lite.

In the beginning of 2010 Suunto released Movescount online service. In 2014 Suunto introduced an app for using Movescount functions in iOS mobile devices. After being delayed multiple times, Movescount app for Android was released in May 4, 2015.

On May 4, 2015 Amer Sports announced having acquired Sports Tracker, which is at a few level to be joining forces with Movescount.

Suunto 7R -software brings connectivity between compatible 7R -watches and iOS-devices.

In December 2015, Suunto introduced Customizer, a web page to create and order a customised watch according to individual preferences. At first this is available to be done with Ambit3 Peak and Sport.

Diving computers and instruments

Suunto wrist mount diving compass

In 1965, a British sport diver noticed that Suunto’s liquid filled compass additionally worked underwater. Following this revelation, it didn’t take long before Suunto’s first dive compass, SK-4 (=SukellusKompassi, engl. diving compass) was launched and became well known for its durability and reliability. Among the users were explorers, ecologists and famous sea-dwellers like Jacques Cousteau. During the 1980s, Suunto became a leader in the manufacturing of diving instruments. Having previously produced mechanical instruments, Suunto now started the production of electronic diving computers and launched the SME in 1987. This was Suunto’s most significant innovation of the decade and a major influence on scuba diving’s transition to a popular sport.

Suunto in the media

  • Using Suunto Vectors and Garmin 60CSx GPS mapping receivers, Australians Nathan Welch and Mark Kalch became the fourth team in history to successfully navigate the entirety of the Amazon River.
  • On April 4, 2008, Swiss climbers Ueli Steck and Simon Anthamatten made the first ascent of Mt. Tengkampoche's North Face in Nepal using Suunto Core wrist altimeters.

Suunto in movies