Newproduct weight: 0.55gType: laptop internal speakerCompatible model: for Pro 13 inch A1278 2011 2012 machineColour: BlackMaterial: composite materialCompatible Subfamily: Pro inchCore i5 inch 2.3 13 inch Early 2011 Pro inchCore i5 inch 2.4 13 inch Late 2011 Pro inchCore i7 inch 2.7 13 inch Early 2011 Pro inchCore i7 inch 2.8 13 inch Late 2011 Pro inchCore i5 inch 2.5 13 inch Mid-2012 Pro inchCore i7 inch 2.9 13 inch Mid-2012Compatible Model No:MC700LL or A, MD313LL or A, MC724LL or A, MD314LL or A, MD101LL or A, MD102LL or APackage Contents:1x Left and Right Internal SpeakerOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.