1. This is a left and right built-in speakers specially designed for notebook computers, with fine sound quality 2. 360 degree surround sound effects to meet diverse noise reduction needs 3. Small size, large volume, high-quality built-in laptop speakers, wide application range 4. Strong compatibility, suitable for laptops, can replace laptop speakers 5. and easy to install.<br><br>Product name: Built-in speakers for laptops Type: laptop speakers Purpose: Amplification Compatible : suitable for Probook laptops Applicable model: suitable for Probook 4530S 4531S laptop internal speakers Colour:black Material:plastic<br><br>Package Contents: 1 pair x laptop built-in speaker<br><br>Only the above package content, other products are not included. Note: Light 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 +/- 1-3cm.