Their appearance is general, But For the price they sound quality is amazing! People who really knows about sound quality would understand it is worth the price, I recommend this product.

Being in the world of I.T, I literally use this everyday, on average for 4 to 10 hours a day, charging it in its case when time permits and it has never let me down once!!!

This Kindle book does not have page numbers that correspond to the printed book. The screen numbers do not translate directly to the printed page numbers. The screens are numbered from 1 to 19,219. When an instructor says "if you will go to Excel page 53", you have no idea of how to get to the screen that correspond to "Excel page 53"! Another problem is the resolution of the Figure #-## examples. When working through a chapter and you are instructed to enter the data in one of these examples into your worksheet, you cannot read the data show. Also when you follow a tutorial and want to compare your Worksheet to an example shown, you can't!