JBL multimedia speaker system model On Stage Micro Battery Powered (or AC) and Remote Controlled! Circular design for "everywhere" sound dispersion. Stand alone powered speaker system with RF remote, that docks and recharges iPod Models (except the iPod shuffle), but also works great with laptops, other MP3 players, and as regular computer speakers. Very small and durable, fits anywhere, throw it in a backpack to take on the run. Manufacturer Description: It's not much bigger than an iPod Universal Dock. It's AC- or battery-powered so it can go with you anywhere. And it delivers legendary JBL® audio performance. As a stand-alone iPod music system, JBL On Stage Micro fills your room with accurate, full-spectrum sound. Connected to your computer, it upgrades your speakers, keeps your iPod in sync and frees up a ton of desk space. Never before has something so small been quite so entertaining. The JBL On Stage Micro incorporates the Apple®iPod Universal Dock adapter and is compatible with most docking versions of iPod, including nano and 5G versions (limited functionality with 3G iPod model). A stereo mini jack connection also allows you to enjoy high-quality audio from a variety of other devices such as MP3 and CD players, desktop computers and laptops (all platforms). Touch volume control just a touch increases or decrease the volume. JBL On Stage Micro also remembers your last volume setting even after the system shuts down. A full navigation remote control provides full access to your iPod so you can easily change tracks, browse libraries, adjust settings, and scroll through extras. The Class D digital amplifiers provide clean, powerful sound while extending battery life. The JBL On Stage Micro is designed to use most types of AAA batteries. Four fresh AAA batteries provide over 24 hours of continuous play at normal to high listening levels. An amber LED flashes when the battery protection circuit senses the batteries are low. JBL encourages the use of rechargeable types of batteries (i.e. NiMH and Lithium). These batteries reduce waste and help the environment. The RF remote control will operate through walls up to 50 feet; features volume up and down, play, fast forward and rewind. A OnePoint iPod connectors provide the connection to your computer. Attach the standard iPod cable to the rear of JBL On Stage Micro and every time you dock your iPod, you'll have a connection for synchronizing and charging. JBL On Stage Micro charges your iPod when not connected to the computer, even if the system is off. Plug your iPod wall charger into the back of JBL On Stage Micro and your iPod will charge with or without the system on. An auxiliary audio input cable is also included for iPod shuffle and MP3 players. Surface-gripping rubber feet provide a stable platform on most surfaces. Odyssey® transducers - The four aluminum-domed transducers are driven by powerful neodymium magnets. This design provides a full, rich frequency response, from the lowest bass to the highest highs. COE (Computer-Optimized Equalization) - The JBL On Stage Micro system equalization has been computer-optimized to provide a rich, complete soundstage. AEMS (Advanced Energy Management System) - The JBL On Stage Micro system has an automatic battery saving shutoff. The AEMS will automatically put the system into sleep mode when the cover is closed or when there is no audio input. JBL On Stage Micro awakens with just a touch and resumes at the same volume level when the cover is opened or the input resumes. specs Drivers Two Odyssey™ Neodymium drivers Power output 2 x 2 Watts Frequency response 70Hz – 20KHz Input impedance >10K ohms Signal-to-Noise ratio >85dB Voltage input 100 – 230 Vac, 50 – 60 Hz Dimensions 2-7/8" x 2-1/4" x 5/8" (73mm x 57mm x 15.8mm) Weight 1 lb. (.5kg)