Description of I-Speaker Advanced Mobile Phone Speaker System:    
Listen to your MP3s anywhere with the I-Speaker portable sound system. Small & compact, the I-Speaker features unique Tru-Bass technology for amazing sound reproduction with deeper, rich bass tones.    
Always ready to go, the I-Speaker supports dual mode power, with a choice of battery power or main's power (with the supplied USB and mains chargers) to keep your music going. Device volume compatibility allows you adjust the volume on your mobile phone or iPod, while neat storage system lets the I-Speaker neatly foldaway when not in use.    
Maximise compatibility, the I-Speaker works not only with your iPod, but also with a wide range of mobile phones with its audio adapters.    
Features:    
Mobile phone adapters included; Nokia 'Pop-Port', Sony Ericsson 'Fast-Port', Samsung, Motorola, LG.    
Works with any 3.5mm device    
Exceptional sound reproduction with Tru-Bass    
Small compact design    
Supplied with USB and mains chargers    
Can be powered with 4x AAA batteries    
Don't forget your Batteries!
Energizer Ultra + Batteries
Provides long lasting power for all your household devices! Energizer Ultra+ batteries are the latest generation alkaline batteries for use in toys, radios, CD & MP3 players, remote controls and electronic games.