Description: SCIENTIFICALLY DESIGNED: Electronics handheld games flashing cube features age appropriate difficulty levels and multiple dimensions of growth. DURABLE:Memory training puzzle toy made with sturdy materials to play, with a smooth edge design that is gentle. PORTABLE AND EASY TO USE:Bubble popping sensory toys is lightweight and easy to carry around, with simple and intuitive controls and bright, colorful lights. MEMORY TRAINING GAME: Brain teaser puzzle can cultivate 6 major abilities: hand eye coordination, reaction, logical thinking, memory, cognition, concentration FOUR MAJOR GAME MODES: fun and wonderful childhood 1. Checkpoint mode: 30 major levels, each with 5 small levels 2. Memory mode: 9 major levels, each with 5 small levels 3. Scoring mode: The more lights that go out within 1 minute, the higher the score (up to 100) 4. Multiplayer mode: each player plays a level, and then pass it to the next player. Specification: 3 AAA Battery (not included) Size Chart: Round:15.4cmx3.2cmx10.7cm/6.06inchx1.26inchx4.21inch Square:15.7cmx3.9cmx10.7cm/6.18inchx1.54inchx4.21inch Package Includes: 1 Memory Training Game Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.