8GB Swivel Jewellery Jewelry USB Flash Pen Drive Disk Memory with Simulated Diamond Crystal and Key Ring Great Gift (Ricco &reg; 12-047) Strong Stainless steel Body, Key Ring/Neckstrap String ready Swiel Design, Sliding USB male tip will fold in or retract when not in use. Make the ideal gift for anyone who needs to move around different computers. Compatible with Windows 2000/XP/Vista/7/8, MacOS 10.4 or later Dimension: 43 x 17x 11mm, Weight: 55g (approx.)