Measures Tempo, Rhythm, Length, and Club head Speed. Tests consistency. Using three internal sensors, the Suunto G6 PRO measures each stroke???s tempo, rhythm, length, and clubhead speed. Practice sessions records 100 swings with swing variation and deviation. Tests your consistency for ten consecutive swings. Includes PC interface to download sessions and graphs. Keeps stats and scorecard on the green. Dual-time, day/date, alarm, stopwatch. Material: Aluminum / Leather (Also Model: Suunto SS012208310)