We are Cowin Electronics Corp. Ltd based in Shenzhen , China. We are member of Tradekey.com since November, 2009. Our business is related to Electrical & Electronics Supplies industry and we specifically deal in Notebook speakers. Please find our product details below: Notebook speaker Notebook speaker The best companion for Notebook USB plug for power and play Clip on or stand alone the Notebook Really easy Carrying pouch included Light and portable Model name: CR-818 Output power: 2w*2=4w Power supply: USB cable Impedance; 8 ohm Drive unit: 32mm*4 S/N: >75dB Frequency response: 100Hz-18kHz Sell Notebook speakers Class D amplifier IC Super Neodymium-iron-boron magnet speaker driver Digital stereo sound With clip to stand Carrying pouch included Lightweight and portable No battery or adapter needed USB plug for plug=and-play Handy cable management Works with MAC and PC Specifications: Output power: 1.25W x 2 =2.5W Impedance: 8 ohms Driver units: 32mm x 2 S/N ratio: >75dB Frequency response: 100Hz to 18kHz Gift box size: 295 x 95 x 50mm Input/output: USB cable Notebook speaker Notebook speaker The best companion for Notebook USB plug for power and play Clip on or stand alone the Notebook Really easy Carrying pouch included Light and portable Model name: CR-818 Output power: 2w*2=4w Power supply: USB cable Impedance; 8 ohm Drive unit: 32mm*4 S/N: >75dB Frequency response: 100Hz-18kHz Thank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.