Features include fun and challenging, requires no math skills needed, includes over 1 million puzzles;Easy to Use Number KeypadIncludes Game Timer, Track Your Speed While You PlayNew State-of-the-Art LCD Memo Function;Large display Screen9 skill levels from beginner to expert;For ages 9 to 99, measures 4.5 x 3.375 x 1;Requires 2 AAA batteries, not included

• Sudo-Q-Mate Pro - One Million Sudoku Puzzles Handheld Game - As Seen On TV

Sudo-Q-Mate Pro - One Million Sudoku Puzzles Handheld Game - As Seen On TVTrademark Global - Toys