This USB card-shaped mini speaker comes from I.D,E.A in Japan. It measures 3.3 x 2.2 x 0.3 inches, and is constructed of heavyweight metal. The speaker features 0.7W and 8ohms/1.0KHz. The built-in rechargeable battery can offer 2 hours of use through USB connector or 5 hours of use with the 3.5m...




