6 In-14 Nixie tubes. Tubes included and installed. Comes with USB cable. 6.3″x2.4″x2.4. Time display (12H/24H, 2 display modes, automatically saved after adjustment). Date display (YY-MM-DD year, month, day, MM-DD-YY month, month, year, DD-MM-YY day, month, year, 3 display methods, automatically saved after adjustment). Glow tube test (adjustable display 0–9 to facilitate test whether the glow tube is intact, or whether the welding is intact, the default is 0 at boot). Anti-poisoning time (scanning interval time, seconds are not adjustable, the program is set to scan at 30 and 31 seconds, scan for 2 seconds, and the interval time can be based on actual operation). If you have any question- just ask me.