From publisher blurb:
Spies need gadgets. In the Equipment chapter of the White Lies core rulebook there are general guidelines for gadgets, and there are specific lists of gadget-like upgrades available for weapons and vehicles. This [base item] plus [upgrades] formula common to vehicles and weapons can be extended to a new type of equipment described in this supplement: the Agency Wristwatch.
An agency wristwatch costs quite a bit of money. Some agencies may provide this for free, as part of the initial outfitting of a new agent. Other agencies may require the agent to come up with the funds himself after being successful in missions. After all, fresh recruits often have a high mortality rate and it would be expensive for them to waste such gear on untested rookies.
Although sixteen individual upgrades exist in this supplement - feel free to create your own! Share in the comments!