With an unrivalled 100 hours of battery, enough to keep you going and your phone charged all weekend, great for festivals. 50 watts of power with a custom 70mm speaker driver, serious amounts of bass & clarity making it the loudest portable speaker for its size The Minirig App ...With an unrivalled 100 hours of battery, enough to keep you going and your phone charged all weekend, great for festivals. 50 watts of power with a custom 70mm speaker driver, serious amounts of bass & clarity making it the loudest portable speaker for its size The Minirig App opens up loads of extra features from the 3-band equalizer to handsfree calling and headphone receiver mode, available on IOS, Android and Chrome (PC/MAC) Link up as many Minirig 4 speakers as you can wirelessly with Bluetooth! great fun with friends giving that party the boost it needs Designed and built in Bristol, United Kingdom, hand-built by a passionate team of music enthusiasts from DJs to bass guitar players Minirig 4 Bluetooth Speaker Loudest portable speaker of its size.