ITEM NAME:Super Mini PAM8403 2*3W D Class Digital Amplifier Board 2.5-5V USB Power Gr C7U2 Super Mini PAM8403 2*3W D Class Digital Amplifier Board 2.5-5V USB Power Gr C7U2 Product Name : Super Mini Digital Power Amplifiers Board Model : GY-30 USB Power : 2.5V-5V Power : 3W IC : PAM8403 PCB Size : 2.1 X 1.8cm / 0.8" x 0.7" (L*W) Material : PCB, Aluminum Main Color : Green, Silver Tone Net Weight : 5g Package Content : 2 Pcs Super Mini Digital Power Amplifiers Board Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.