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The total time it takes to fully charge the battery.
How long the battery will last on continuous play from full charge to completely dead. This is displayed in hours.
The type of batteries the MP3 player accepts or includes. Most use some kind of rechargeable lithium technology, but some still use standard alkaline.
The MP3 player includes a clock.
The higher the resolution, the clearer the images can display. The best players can display up to 720x480; however, 320x240 is more common. Typically, the smaller the media player screen the lower its resolution.
Player can play FM radio, some can also record radio or offer the ability to preset stations.
The MP3 player includes an expandable memory slot for additional data storage.
The MP3 player’s depth measured from front to back.
The height of the MP3 player from the bottom to top.
The MP3 player’s screen size measured diagonally.
How much the MP3 player weighs usually measured in ounces.
The width of the MP3 player measured horizontally.
This represents the difference between the level of the audio signal and interference; the larger the number the cleaner the sound.
The amount of digital memory installed in the MP3 player. This is measured in megabytes (MB) and gigabytes (GB). The more GB of memory a player has the more music, video and overall information the player can store.
The MP3 player includes a warranty. Most are limited to time and excessive mishandling. Warranties vary from 90 days to the lifetime of the MP3 player.
The technology used to display the information of the mp3 player.
The range of frequencies the mp3 player is able to produce.