What camera resolutions does LeTV Le Max feature?

Here are details about the LeTV Le Max's camera sensors:
Rear Camera : 21 megapixel
Front Camera : 4 megapixel
Flash : Dual-color LED
Camera Options :
+ Exmor-R CMOS image sensor
+ Face detection
+ Geo tagging
+ High Dynamic Range mode (HDR)
+ Smile detection
+ Touch to focus