Ava bracelet or similar available in Australia?

Hi TTC friends, I fear that I am not that good at bbt tracking as I am a fairly light sleeper and often go to the bathroom in the short hours prior to getting up for the day.

I feel like the Ava bracelet would be a great way to get a more accurate chart..

Has anyone used it before (what are your thoughts on it?) or are there any other similar devices on the market?

Also, I'm in Aus and the Ava doesn't appear to be available here. Do any of my fellow Aussies know otherwise?

Thanks! 😘