Product name: USB Star empty Roof in the car. Operating temperature:-20 °C ~ 70 °C. Product life: more than 10000 hours. Operating voltage: 5V. Laser power: 100mw. Product size: length 28cm. Waterproof grade: IPX4. Installation location: handbox, center console, etc. Install the line: just the USB Jack. Product features: Show the effect of starry sky