Themeable Analog Clock - Sony Xperia M4 Aqua

Good day guys,
I just want to ask if any of you guys is using the "themeable analog clock":
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i tried selecting it, but when i look into the lockscreen it reverts back to sony clock (if previously you are using sony clock, if you are using digital clock it will revert to it also). i wanted to use an analog clock, not sony's analog clock coz it doesn't look good.
can I ask a favor for those who has a E2333 model (or other who have this option) to check their devices if you have this option? it would be very much appreciated if someone also did use of it, or knows how to use it. thanks!
my phone:
model: xperia m4 aqua dual (16gb, E2333)
version: 5.0
build: 24.1.B.2.147
(not rooted, no theme launcher)