I was pleasantly surprised to see this aircraft. It's basically a standard 900-series 737. Unlike the -900ER, the -900 does not have winglets, other than that, it still features everything else that makes a 737NG tick.

The airline operates 12 of these 900-series planes, but this is the first one I've seen. They also operate at least six -900ERs w/ over 30 currently on order.