If you are not satisfied. Our Vintage Nixie Tube Clock is handcrafted using the largest Soviet IN-18 Nixie tubes. These Nixie tubes are at least 35 years old in history. We can best describe our clock as vintage technology combined with a crafty elegance in a subtle wooden handmade enclosure. The tubes are not soldered to the PCB so you can replace them quickly.This beautiful clock brings history to your home with its durable, vintage components. The soft and warm glow of the Nixie tubes makes them perfect to use in your bedroom without disturbing your sleep. The motion sensor feature turns off Nixie tubes when no one is around. Blue LEDs behind the Nixie tubes have decorative effects you can disable if desired. You can display time in 12 or 24 hours format. Built-in battery socket for proper time backup during power interruptions. Auto-backlight shut down for a comfy night-mode operation from 22:00 till 7:00. The body is made from one solid piece of wood. Universal power supply 110-240V with plug for your country. Size (LxWxH) LARGE: 11.42"? 3.94" x 3.5" MEDIUM: 10.24"? 3.74" x 3.5". WHAT IS INSIDE THE BOX? Power Adapter (included EU/US/UK/AU socket). Let's give your room a beautiful lift with this long-lasting vintage nixie clock. Have your family and friends adore your room on their next visit.