Insten Dock Station Speaker for 16GB/32GB/64GB iPhone 4/4S and iPod touch 4G Apple iPod, iPhone, or iPad are registered trademarks of Apple, Inc. Products are Apple compatible and not endorsed by Apple, Inc. Compatible With iPhone 4 / iPod touch 4G 4th Gen / iPhone 4S - AT&T, Sprint, Version 16GB 32GB 64GB. This amplified portable speaker combines delicious style with refined sound. Delivers high quality audio from aluminum speakers. Specifications: Color: Black. Speakers: 50mm, 4 Ohms. Signal cable: 22cm with 3.5mm plug. Output: 1W x 2. Frequency response: 150Hz-18kHz. Dimensions (folded): approx. 4.40" x 2.40" x 2.40" inches (11.18 x 6.10 x 6.10 cm). Weight: 0.4 lbs. Power Supply: USB Power Cable. Batteries (4 x AAA). AC 6V Power Adapter. Note: AC 6V Power adapter and Batteries are not included.