Yet another cheap board from Asia. It seems interesting because of armv8 (64bit) 4 cores SoC and 2GB of LPDDR3. It also have PMU, so you can add 3.7V liPO battery that will be managed and charged in place. On the down side, my board does not have optional EMMC.
If you have extra $15 and good SMD station, you can try adding it yourself.
Full board specification and images are here:
http://www.orangepi.org/OrangePiWin_WinPlus/