Features: 1. This is a built-in speaker specially designed for Laptop with detailed sound quality2. 360 surround sound effect to meet diversified noise reduction needs3. Small size, high volume, high-quality built-in laptop speakers4. Strong compatibility, suitable for Pro laptops5. Durable and easy to install.specification:Product name: Built-in speakers for laptopsMaterial: Plasticcolour:BlackModel:A1706Type: laptop speakerCompatible : for ProApplicable model: For Pro Retina 13 inch A1706 laptop Built-in Left And Right speaker 2016 2017Package Contents:1 pair Laptop left right speakersOnly the above package content, other products are not included.Note: Light reflection 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.