Suunto - Observer SR with Positive Display - Altimeter: Altitude, vertical speed, logbook function with quick-access button, memory capacity 99 logs, history memory, alti/baro lock, temperature compensation - Barometer: Sea level pressure, absolute pressure, weather trend indicator, temperature, automatic 4-day barometric memory, alti/baro lock - Compass: Bearing, cardinal bearing, bearing tracking, North-South arrow, declination setting - Chronograph: Calendar, 3 alarms, dual time, stopwatch with 99 split/lap times - Material options: Suunto Observer Sr - stainless steel housing with elastic strap (80 g), Suunto Observer St - stainless steel housing with stainless steel elastomer strap (100 g), and Suunto Observer Tt - top-of the-line model - titanium housing with titanium elastomer strap (75 g) - Two Black Collection models - Suunto Observer Black and Suunto Observer ST Black - Water resistant to 100 m (330 ft)