Lucid Dreaming | Smart watch or something to train RC?

Hey guys, I've been doing my best keeping up with my gravity RC or ADA style practices.

While I do it sporadically throughout the day I do still get lost in automatic mode though. I want get to the next level! And yeah I tried using an interval alarm, or an audio on my phone, but it could disturb others and I can't have it on all the time.

So I'm trying to find some device that could help remind me to do it a bit more often and consistently. I thought a smart watch or a fitness wristbands would be great for this. If it could vibrate once every few minutes it wouldn't disturb anyone that much and I could keep it on most of the day too.

I was looking around and I found these for pretty cheap:

Wear24
miband 3
amazfit bip

Does anyone has experience with these or uses something similar, or better? Basically I wanted to get something easy to carry around anywhere, vibrates(so it's relatively silent, or maybe has a speaker), cheap and disposable so I can stop using it when I'm satisfied with my progress.

Thanks :)!

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