Are these real Nixie tubes?
No. ClocTeck uses LED tubes designed to come close to the look of an IN-14 Nixie tube. The brand's reasoning is that real Nixie tubes have mostly been out of production since the Soviet era and the ones left are expensive and short-lived. The LED version gives a long life and lets each digit glow in any color, which real tubes cannot do.
Does the Wi-Fi time sync keep it accurate?
It helps, but this is the clock's weakest area. Wi-Fi connectivity and time drift are the two common problems. Once it is connected, a quick resync puts the time right, and it handles daylight saving automatically. Others cannot get the phone connection working and set it by hand, so expect to check the time now and then.
Can I set an alarm?
Yes. ClocTeck lists an alarm alongside the timer and 12 or 24 hour display, and you can set it from the phone page or by hand: long press TIME until the display turns blue, then short press TIME three times until it shows red. Setting the alarm to 0000 switches it off.
Do I need an app to control it?
No. The clock broadcasts its own Wi-Fi network. Join it from your phone and a control page opens in the browser, where you set colors, modes, time, alarm and your home Wi-Fi. The page can open in Chinese at first, and it can be switched to English.
Can I change the colors and brightness?
Yes. Each display group can take its own color from a range ClocTeck puts at 16 million, with eight display modes including breathing, rainbow flashing and water flowing, and a Sync All option to match every digit. Brightness has five levels, changed with the up key on the back rather than from the phone.
Is it worth buying?
If you want it mainly for the look, yes. The design is its greatest strength, and the walnut and aluminum build feels solid. If precise, hands-free timekeeping matters more to you than the glow, the reports of drift and awkward Wi-Fi setup make it a harder sell.