MMOBIEL 100% NewSpeaker set (Left and right Speaker) Compatible with MacBook Pro Retina 13" A1278 Model Year range Mid 2011 2012 Product Nr: MC700 MD101 MD313 Important: Please check the Model Number before purchasing this Item. You will find the Model Number on the back of your device (see product images on the left) Easy installation: Replace your faulty Speaker Set Left and Right and Pre-Installed Adhesive Stickers. Product provided by MMOBIEL - We always try our best to exceed your expectations at every turn. Join the ever-growing list of satisfied customers and discover the difference with MMOBIEL.