The new Speed Stacks G5 Timer is the next step in the evolution of sport stacking. The patented four-pad activation system eliminates a whole class of scratches by ensuring that hands can’t be holding cups when starting and stopping the timer. Other G5 features include: Two operation modes: 4-Pad (for stacking) and 2-Pad (for speed cubing). Just hold the RESET button for 5 seconds to switch modes. RESET and POWER buttons have a new reinforced design that won’t wear through with extended use. Hold-feature on RESET and POWER buttons prevents lost times when a timer is slammed. Tournament Display (sold separately) cord plugs in underneath the timer so it’s out of the way and doesn’t accidently get unplugged. A new snap-in G5 button system eliminates timers getting knocked off the mat inadvertently.