White Shuttle: Place under direct sunlight outdoors for 5-10 minutes to absorb ultraviolet rays and store energy automatically. During the day, it appears white; at night in a dark indoor setting, it emits a fluorescent glow. For any inquiries, please contact our customer service team anytime. Thank you.
Purple Flying Shuttle: Expose to indoor lighting for 5-10 minutes to absorb light and retain energy. The purple shuttle shows a purple hue in daylight and glows fluorescent in dark indoor environments at night. Feel free to reach out to our customer service with any questions. Thank you.