Indicates the degree of protection against liquid. IP X1: Dripping water while in normal operating orientation; IP X4: Splashing water; IP X5: Water jets; IP X6: Powerful water jets; IP X7: Immersion up to 1m ≤ 30 minutes; IP X8: Suitable for submersion as specified by manufacturer.

An electronic compass allows the user to view their heading in situations where they are either standing still or moving too slowly for the GPS to detect.

Calculated based on data from a heart rate monitor.

An online community where members upload, analyze and share activity data.

These units allow you to add maps, so you can mark and name waypoints and create routes on your PC, and then upload the map of your choice to your GPS.

Want an easy jog? A fast-paced ride? A workout with lots of variety to keep you on your toes? With programmable workouts you can tailor your training to match whatever you are looking for on a particular day.

Automatically triggers a new lap after reaching a specified difference.

Automatically pauses timer when you stop or go below a specified pace.

Displays beats per minute during activity.

Displays calorie expenditure during activity, based on heart rate monitor data.

Monitors pedalling cadence and measures pedalling strokes per minute.

A POI (point of interest) is a specific location that someone may find interesting (i.e., favourite viewpoint, best coffee stop before the trailhead). The custom POI feature allows the user to load only the POI's that interest them onto their GPS unit.

Waypoints consist of a standard set of coordinates (two for land, three for air or space) that identify a specific physical location. A route is navigated between two or more waypoints.

Displays output in watts as you ride.

Shares data wirelessly between compatible units.

A basic set of map data that is included with the GPS. Basemap detail may vary from unit to unit.

Attaches to your shoe, captures your running data (i.e., pace, distance), and transmits it to your heart rate monitor or GPS.

Displays heart rate zones during activity.

Barometer function helps forecast weather trends. An altimeter can provide one line of position for location on a topo map, useful if the GPS isn't working.

A coded instrument ensures no interference between your chest strap and your watch, necessary if you are training in busy gyms or trails where other signals may be encountered.

Allows user to monitor training goals with either a virtual partner or alarms.

Pauses the timer when slowing or stopping, and automatically resumes when moving again.

An alarm that notifies you if you vary from a pre-set pace.

Ensures seamless digital wireless communication between ANT+ devices. For example, data from an ultra-low power wireless sensor can be displayed on a bike computer or smartphone, then downloaded to a PC, etc.