How to show seconds on the Windows 10 tray clock

How do I show seconds on the Windows tray clock? I've tried the advanced options in the control panel, but I'm not sure how do I do it. Is it like hh:mm:ss or is it something else?

*Source : How to Show Seconds in Taskbar Clock in Windows 10?

1. Start Regedit.exe and go to the following registry branch:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced

2. Create a REG_DWORD value named ShowSecondsInSystemClock

3. Set its value data to 1.

4. Logoff and login back.

This adds seconds to the tray clock.

Works in Windows 10 Anniversary Update (v1607) and higher.

7+ Taskbar Tweaker Beta can enable seconds on the standard Taskbar clock.

http://rammichael.com/7-taskbar-tweaker

Alternatively , Since windows 10 supports the apps , you should be able to find digital clock app in windows store and install it.

Windows 10 Store

App Store Youtube Video

Or

How to enable gadgets on Windows 10

You can enable gadgets for windows 10 which is not recommended anymore by Microsoft and add digital clock to your desktop.

Windows 10 Gadgets Download link : http://goo.gl/sXSAUw

OR

Go to github using the link below , Download the zip file at the bottom of the page T-clock.zip like in the shared below. Unzip it , after unzipping it , you will have a folder then open the folder , you will see clock.exe double click on it . if your operating system 64 bit then double click on clock64.exe , then you should be able to see clock.

Git Hub

OR

Install free desktop clock , it is compatible with windows 8 most probably will work with windows 10 FREE DESKTOP CLOCK