GZSHUNLI Hard drive speed:5400rpm Hard drive size:2.5 inches Memory capacity:320GB Cache capacity:8MB Interface:USB 3.0 Colour:Silver Material:Metal Size:115x79x13mm Package Contents: 1 * Mobile hard drive 1 * data cable 1 * English instruction manual Only 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.