IPEVO CSSB-02IP Tubular Wireless Speakers (Black) Portable stereo sound for your iPad1, iPad 2 and iPad 3 or any Bluetooth-enabled audio device Unique interlocking tube design; an ultra-portable sound solution for your iPad 6 to 8 hours of audio enjoyment on a full charge; USB-rechargeable battery Rubber spools on each speaker rotate to wind cords for portability and to avoid clutter Lightweight at only 9.5 ounces (270 grams); Dimensions: 2.5 x 5.5 x 2.9 (75 x 140 x 75 mm)