ITEM NAME:Mini DC 5V PAM8403 Audio Amplifier Module Board with Potentiometer Switch A#S Product Description Description: Features: Mini size design. HD digital audio signal output. With 470uf 1.6mm glass fiber power wave filter board. 3W+3W audio output. UP to 15 years long service life, with switch. Specification: Power: DC 5V Output: 2 x 3W Size: approx. 29.5 X 20.2 X 15 mm/1.16 X 0.8 X 0.59 in Included: 1 X Amplifier Module Board.Included:1 X Amplifier Module Board. Power: DC 5V. With 470uf 1.6mm glass fiber power wave filter board. HD digital audio signal output. Mini size design. UP to 15 years long service life, with switch.