Please immediately take into account, this is only my own opinion!
In this sector, we see a local uptrend, we assume the price movement inside the price band, the at 0.6689 is also quite encouraging (rather optimistic statements on the global downtrend))
We expect a price correction when approaching the upper .
The possibility of buying when:
1. Reaching the lower (the lower green border)
2. Purchasing at a price correction to the of 0.6689
3. The price will fall / soar)
1 and 2 option can only be considered with confirmation that the support levels really worked!