All RK2706 players are supposed to support SDHC, but I can't confirm this as I don't have one to try.
Is an FM Radio important?, the one mine had was very poor reception.
btw the card slot is not as good as it sounds, if you did add 8GB you can't access all at once as a 16Gb total, you have to mount the card on it's own from the player's menu, afiak all card slots on mp4 players work this way
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