Genuine leather casing protects USB. RoHS compliant. Compatible with Windows XP and higher and Mac OSX and above. 3.62" H x 0.62" W x 1" L. Imprint area is 0.31" H x 0.75" L on Flap Left - ClosedCentered on plate and includes a Laser Engraved Imprint. Packaging: Bulk. Please call for rush delivery availability or multi-colour/multi-location imprints.