The "XD-SX4810" supports 6 subjects & the Common University Entrance Test, and excels in the four English skills and standardized tests. It thoroughly supports 6 subjects and is fully compatible with the Common University Entrance Test. It also supports English language learning by covering the four skills of reading, listening, writing, and speaking. I purchased it a year ago, but I haven't used it much until today. There is no cover. However, I will pack it carefully for shipping.