iKross Red 3.5mm Portable Mini Stereo Speakers for Samsung Galaxy Tab 3, 2, Note 10.1, 8; Acer Iconia W3-810,A1-810,B1-A71, A110,A210; Asus MeMO Pad, VivoTab Smart, Transformer Pad PumpBass technology: small size, big bass and volume Maximum play time up to 8 hours. Patented built-in retractable cable Portable style. Dimensions: (W) 53 x (D) 53 x (H) 98cm Power output: 4W. Speaker: D36mm. Li-Polymer battery input: 5V DC/430mAh Standard 3.5mm audio jack. Suitable for Apple's iPod/iPhone/iPad, Tablet PC, NB and MP3 player. With CE and FCC marks