Size: 17” X 13” Inches Green Alien Led Sign: This Green Neon Light For Bedroom Is Eye-Catching Art Decor, Which Can Not Only Create An Interesting Atmosphere In The Room, But Also Adjust Your Mood. Let You Have A Good Mood At Any Time. Suitable Large Size: The Size Of Aline Light Up Signs For Wall Decor With 78 In Usb Cable. There Are Two Pre-Drilled Holes For Easy Hanging (Includes A 31" Metal Chain And 4 Screws). Easy To Use! Usb Power Supply: Alien Neon Sign For Man Cave Are Operated By Usb (