This is our first clock kit design, made with a retro Russian display tube! Cool glowing blue tube with 8 digits, PM dot and alarm on/off indicator Adjustable brightness Alarm with volume adjust Precision watch crystal keeps time with under 20ppm (0.0002%) error (< 2 seconds a day) Clear acrylic enclosure protects clock from you and you from clock Battery backup will let the clock keep the time for up to 2 weeks without power Selectable 12h or 24h display Displays day and date on button...