12 or 24 hours time display format. Date in format DD:MM:YY or MM:DD:YY. 6 NEW IV11 VFD Tubes.Programmable hour for automatic switch on/off the display. Precision is better than 1 minute per year! Backup battery included for maintaining accurate timekeeping when main power of the device is interrupted (CR2032 in socket), even for more than 3 years. ALARM function, can be disabled if not used. For alarm and time setting, a single button is used - an user friendly knob - rotary encoder: push to select, rotate left/right to adjust, push when ready. Power supply 12V/1A included, EU socket, 5.5/2.1mm positive inside. Settings are based on the rotary encoder, located at the back of the unit. One single button, simple and intuitive, it is used for time, alarm and advanced parameters setting push for select and rotate for up/down. The item "Blue Cake IV11 VFD Alarm Clock Wi-Fi NTP perfect sync by Monjibox Nixie" is in sale since Tuesday, June 15, 2021. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets". The seller is "monjibox" and is located in Bucharest, Romania, 020105. This item can be shipped worldwide.