Thank you for viewing! Puzzle Puzzle This is a red puzzle with an electronic calculation function that allows for 2339 combinations. It's an old item, so the case, instructions, etc., have a retro feel. - Model: NO.5 - Color: Red - Features: Puzzle with electronic calculation function that allows for 2339 combinations - Size: Approximately 5.0 x 8.0 cm - Included: Instruction manual Thank you for looking.