DBEST London Duo Bluetooth Rechargeable Mini-Speaker Set (PS4003BT-RB) Stereo wireless music streaming up to an astounding 45 feet Engineered for exceptional sound clarity and depth Powerful built-in amplifier delivers surprisingly loud volume Stunning, ultra-portable design with magnetic joining bases for easy transport Best-in-class battery performance with up to 20 hrs. continuous wireless or 40 hrs. wired playback Compatible with phones, iPod, laptop, iPad and all devices featuring 2.1+EDR Bluetooth or 3.5mm audio jack Compatible with all standard USB chargers (PC, Car, wall charger) Includes deluxe travel pouch