The light-emitting area and the refraction area can be rotated to adjust the refraction angle of the light. *High-quality LED products, high stability, long life, long-range refraction and brightness clearer, no heat radiation, no harm to the skin. *Low power consumption, continuous use of about 30 hours, safe and practical, environmental protection and energy saving. *Innovative technology, using the principle of optical refraction, easily bring the rainbow home. SB power supply: 5V 1A Power consumption: 100mA/h Battery type: 18650 Battery Wattage 4.44Wh Product material: ABS plastic Battery capacity. 1200mA Number of batteries: 1 Lithium content: 0.71g Battery weight: 37g Number of battery cells 1 Products include: shell rainbow light, USB data cable, Chinese and English manual Product size: 1311.85.4CM Charging time: 3-4 hours Use time: about 12 hours Indicator light: red light (charging), green light on (full charge) Instructions for use Operation guide 1: Rotate the angle of the light so that the light is projected to the reflective surface 2: Rotate the reflective surface to project rainbow light onto the wallLight mode MODE-A: Slow rainbow light gradient projection mode MODE-B: Rainbow light projection mode The A key has no timing function, The rainbow function corresponding to the B button will automatically turn off after 2 hours of power on "all Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. we Will Give You The Best Solution."