The Marware UpSurge Mini Speaker delivers crisp, distortion-free sound from virtually any media player device. The UpSurge travels with you wherever you go, providing rechargeable, long-lasting audio enhancement in the palm of your hand. * Product Material: Aluminum * Product Weight: 0.40 lbs. * Speaker works with virtually any media player device with a 3.5mm headphone jack - perfect for mobile phones, laptops, tablets, portable gaming devices and MP3 players * Vacuum bass expansion system and digital amplifier enhance sound quality * Weighs 5.1 oz/DC-5V charge/Built-in Lithium-ion rechargeable battery (3.7V 500mA) * Play time: 5 hours * Includes: speaker, USB charging cable, detachable 3.5mm audio cable, manual