Ehtereum $ETHUSD is in a sharp retreat after tagging $350. As we start the 10/18 global session, it is approaching key support levels around 305-310.ETHUSD 4H Chart(click to enlarge)Channel Support:- In the 4H chart, we can see that ETHUSD has completed a double top and is falling towards a channel support.- This area around the channel support, 305-310, is also around the resistance since mid-September.- We should monitor what happens here. A bullish market should not fall below 305. - A break below 300 would be a very important bearish signal that would open up the 240 pivot as well as the September low just above 200. - If price can hold above 305, the bullish breakout from a week ago would still stand. In this scenario, the bullish outlook has 350, then 370 and even 400 in sight.