1. This is a left and right built-in speakers specially designed for notebook computers, with fine sound quality2. 360 degree surround sound effects to meet diverse noise reduction needs3. Small size, large volume, high-quality built-in laptop speakers, wide application range4. Strong compatibility, suitable for HP laptops, can replace laptop speakers5. Durable and easy to install.Product name: Built-in speakers for laptopsType: laptop speakersPurpose: AmplificationCompatible brands: suitable for HP Probook laptopsApplicable model: suitable for HP HP Probook 4530S 4531S laptop internal speakersColour:blackMaterial:plasticPackage Contents:1 pair x laptop built-in speakerOnly the above package content, other products are not included.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 +/- 1-3cm.