Its 5-digit mechanical combination code will securely lock the flash drive that is hidden inside and ultimately make you the only person able to grant access to the flash drive. Security for data storage, Anti-magnetic, Anti-seismic, moisture resistant, high temperature resistant, and attack resistant. Features - Color: Black. - Material: Metal. - Size: 6.35x2.3x2.3cm. - USB flash drive has a 5-digit mechanical combination lock to safely lock and protect your flash drive from unauthorized access to your digital information stored on your flash drive. - Its 5-digit mechanical combination code will securely lock the flash drive that is hidden inside and ultimately make you the only person able to grant access to the flash drive. - Warm Tip: Dear buyer, due to lighting effect, monitor& 39;s brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand