Rubik's Cube timer, since the cup-stacking mats are kinda expensive... :D (Even though this is NOWHERE near as good as those. D: ) But yeah, just hit space to start the timer, and space again to stop. Honestly don't know how accurate this thing is... My best times (using a timer): 2x2x2: 12 seconds 3x3x3: NA 4x4x4: NA 5x5x5: NA One-handed: 2x2x2: 62 seconds 3x3x3: NA