Data Storage Capacity: 4GB Opening: Retractable Interface: USB 2.0 Max. Read Speed: 5MB/s Max. Write Speed: 3MB/s Laser Engrave Finish: Natural Etch Dimensions: W 29mm x L 50mm x 13mm (Dia 33mm ring) Materials: Case (Outer) – Stainless Steel; Case (Inner) – Acrylonitrile Butadiene Styrene (ABS); Key Ring – Iron
