Brand New product weight: 055g Type: laptop internal speaker Compatible model: for Pro 13 inch A1278 2011 machine Colour: Black Material: composite material Compatible Subfamily: Pro inchCore i5 inch 23 13 inch Early 2011 Pro inchCore i5 inch 24 13 inch Late 2011 Pro inchCore i7 inch 27 13 inch Early 2011 Pro inchCore i7 inch 28 13 inch Late 2011 Pro inchCore i5 inch 25 13 inch Mid- Pro inchCore i7 inch 29 13 inch Mid- Compatible Model No: MC700LL/A, MD313LL/A, MC724LL/A, MD314LL/A, MD101LL/A, MD102LL/A Package Contents: 1x Left and Right Internal Speaker 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.