Great price for these popular portable speakers which are powered by USB/inbuilt battery (spec via link). I guess they are limited availability but I reserved mine online at my nearest store.
X Mini Max Portable Speakers Gun Metal
• Special ceramic drivers pumping out crystal clear audio
• Battery life up to 18 hours for non-stop portable fun
• Compatible with Smartphones, tablets, multi-media devices and more
• Bass Xpansion System (BXS) mimics the effects of a sub-woofer for deeper fuller bass in a tiny capsule
• Buddy-Jack function to join multiple XMI Capsule Speakers creating your own speaker system
Offering crisp and clear sound with the latest ceramic drivers is the stereo X-Mini Capsule Speakers - the MAX
Featuring a fresh, snazzy design, enjoy greater portability and an enhanced stereo sound experience with the MAX. Each module now has its own stow-away cable which provides an additional option of using them individually. No matter how it is used, the promise of Sound Beyond Size remains.
The MAX has a patented extendable vacuum that mimics the resonance of a sub-woofer (Bass Xpansion System) capable of producing explosive volume and bass over ten times its physical size.
With the modular Buddy-Jack design you can connect a row of MAXs for jaw dropping audio, capable of forming an almost endless daisy chain of self-powered, bass-enhanced portable speaker system.
To eliminate cumbersome audio cables dangling from the speaker, XMI has designed a connecting audio cable that can be tucked neatly into the base for a cleaner and sleeker look; whilst the high capacity rechargeable battery capable offers sustained output for up to 18 hours.
The MAX is revolutionary in the world of portable audio technology, striking the perfect balance of pocketsize portability and uncompromising sound quality.