In the past few years, we have covered plenty of amazing Nixie clocks here. The Makenology Luna Nixie Tube Clock can do more than showing you the time and date. It has a 15w x 2 Bluetooth speaker system. It has IN-12 Nixie tubes and supports 12/24 hour modes.
This Bluetooth Nixie Clock Speaker has a RTC chip to keep accurate time. It has a modular design for easy modification.