What is this "volatility cards" ? How we can use them? Are this cards for some digital good or just good in online shops like Amazon? Where i can read about this cards?
It's basically a bet where you can make a prediction how a specific market - so far BTC, ETH and EOS are available - develops in 10 minutes, 1 hour or 24 hours. If you think the market will go up, or down quite a lot, you buy a bunny card. If you expect smaller movements, both up or down, the turtle card is the right choice.
You can read more here:
https://bitmaxhelp.zendesk.com/hc/en-us/articles/360024016313-BitMax-io-Upcoming-Volatility-Product-Turtle-Card-Bunny-Card