of the magnetic field, so that the inclination angle of the magnetic field (magnetic dip) cannot 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 also 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 traveling in a canoe. Military models The first military compass produced by Suunto and adopted by the Finnish Army was the M-34, a wrist compass with an aluminum housing, which was also produced by Physica of Helsinki. Both companies engaged in a long court battle over ownership of the M-34 design, which lasted until the early 1950s. In 1989, the Finnish Army adopted the Suunto M89-60 wrist compass with a composite baseplate, followed by the M-801 with aluminum housing. Suunto baseplate compasses used by mountaineering, expeditionary, and rescue organizations around the world include the MC-2, KB-14, A-30, and M5 NATO (RA-69) along with the M-9 and Clipper wrist compasses. The MC-2 optical-sight (mirror) compass, RA-69 and several other Suunto compasses have been issued to various NATO military forces over the years, including the British Army, Canadian Land Forces and several U.S. Special Forces units. The Recta DP-6 matchbox-style compass 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 (altimeter, barometer and compass) functions. Released in 1998, it was available almost unchanged until it was discontinued in 2015. There was also 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