Best MP3 Players - 1 to 10 Hours Battery Life, Coby Brand Name

'The player is compatible with both MP3 and WMA music files and includes a key lock and random shuffle playback feature.  '

'The sound quality of the unit was adequate when plugged into a vehicle’s AUX port and through decent earphones.'

'features an ultra-slim design and user-friendly controls'

'ultra slim design'