NexCube is incredibly user-friendly, compatible with any cell phone model. Simply place your hands down to start, and the timer begins as soon as you raise them. How quickly can you solve the cube? Use the QR code to download the App on your phone. Challenge your friends using the app and stopwatch in either battle mode or solo mode to see who is the fastest. NexCube is the WORLD RECORD speed cube, favored by the fastest Speedcubers globally! With NexCube, you can solve the cube faster than ever. This pack also includes a competition stopwatch for solo or group competitions. Playing with NexCube stimulates the mind and offers numerous benefits, such as enhancing visio-spatial ability, The Nexcube makes a great fidget toy for releasing restless energy. Fidget toys are self-regulation tools to help with focus, calming and active listening and they are so much fun!