Thank you for purchasing our Flashing Game System. To prevent the occurrence of any injuries, please follow these instructions.1. Please do not sit close to the screen. To reduce any radiation harm to your eyes, keep a distance of at least 40~50 centimeters from the screen.2. Please do not play in bed.3. Please play in a well-lit place.4. Please take a short break every hour.5. If you should experience pain in your hands, wrists, arms, or shoulders, please stop playing and see a doctor, if necessary.