Alamscn 2Pcs 2" 4Ohm 3W Full Range Audio Stereo Speaker Round Loudspeaker 2Pcs Product Features High-efficiency speaker DIY kit--Clear sound output, low noise, bring you the best listening experience. Any 5V power supply can be used, suitable for batteries or portable electronic products. 2" 4Ohm 3W Speaker--Diameter: 53mm; Height: 30mm; Rated power: 3W; Rated impedance: 4?; Sensitivity: 100 dB/W. With PAM8403 Amplifier Board--DC 5V digital power Amp module 2 Channel 3W+3W, easy and smooth to adjust the volume and control the power switch with potentiometer. Package Includes--2* 2" 4Ohm 3W Speakers + 2* PAM8403 Amplifier Boards. Note: 1. Do not apply power to the amplifier without speakers connected, this will result in damage to the amplifier; 2. Please make sure operating voltage less than 5.5V, or the amplifier will be damaged. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!