Perfect for wanna-be spies, ThinkGeek is offering a wristwatch with a storage secret - a hidden USB flash drive.

Cunningly concealed within the innocuous looking watch's casing is a 4GB capacity USB flash drive.

Simply remove, add data and then re-insert and you're ready to conduct secret missions in super spy style.

The watch itself has a Japanese movement, plastic case covered by stainless steel mask with brushed silver finish and convex mineral glass.

Available now, the cunning device is $60 from ThinkGeek.