This document compares and contrasts the advantages and disadvantages of four electronic devices: the Sony MP3 player, Apple iPod 5th generation, Lenovo Microsoft 8 PC, and Apple MacBook Air. The Sony MP3 player has advantages of being easy to handle, affordable, and charging quickly, but has disadvantages of limited memory, small buttons, and lacking features. The iPod has advantages like many mobile features and long battery life, but can be easily damaged and charging does not last long. The Lenovo PC has advantages of the built-in Windows operating system and constant internet access, but cannot be portable and has large keys. The MacBook Air has extraordinary features, long battery life, and portability, but apps require payment