Starry Sky Projection Lamp Fantasy Constellation Projector,Style: Monochrome USB Blue Light 1. 1 LED for monochrome, 3 LEDs for the rest (1 each for blue, white, and yellow) 2. Charging model: green light when fully charged, red light when charging, 3-4 hours when fully charged, use time: more than 12 hours for a single light, more than 6 hours for multiple lights, and about 3 hours when the motor bluetooth light is fully on 3. Power supply mode: USB power supply lithium battery power supply 4. Built-in music version with built-in 10 music box music 5. The light switch of the three-color version is operated by pressing the button. Short press is on and off, and long press for 1.5 seconds in sequence: single-color, two-color, three-color light switching 6. Remote control versionmusic versionBluetooth version can be rotated, dimming, timing, other models do not have 7. Rechargeable battery capacity: 1500mAh 8. Material: ABS+PP 9. Voltage: 5v1A 10. Power: 3w 11. Dimensions: 138 x 138 x 82mm