Portable Smartphone Speaker We&rsquo,re thinking world gadget domination, one Smartphone product at a time! Smartphone Speaker is the audio sister to the renowned Smartphone Projector. Boasting 40 hours playback and impressive sound quality and volume whilst remaining lightweight and compact, the Smartphone Speaker is the perfect accessory for camping at festivals, days in the park, kicking back by the pool on holiday and those long summer evening parties. Boasting 30 hours playback and impressive sound quality and volume whilst remaining lightweight and compact, the Smartphone Speaker is the perfect accessory for camping at festivals, days in the park, kicking back by the pool on holiday and those long summer evening parties. Suitable for any Smartphone, MP3 player or laptop. No assembly required Requires 4 AA batteries (not included) ,