Aston Martin CEO Ulrich Bez hailed it as the perfect James Bond gadget. For a super-select group of Aston Martin customers it might be the ultimate automotive status symbol.

No, it's not Aston Martin's just-launched DBS flagship sports coupe, despite its 510hp engine, 302kph top speed and 240,000-euro price tag. The British brand will make just 500 of these exclusive two-seaters each year , but for some even these limited-production numbers aren't exclusive enough.

Now Aston Martin has the perfect answer: a limited edition Jaeger LeCoultre chronograph, available only to DBS customers and, in its most sophisticated form, capable of technical tricks that would impress even the cool-headed Bond.

ENLARGE This watch will be able to lock and unlock the new DBS.

Jérôme Lambert, CEO of Le Sentier, Switzerland-based Jaeger LeCoultre, says the all-mechanical AMVOX2 chronograph is one most complex timepieces in the world, with over 200 parts to its casing and an equal number in the watch movement itself.

For Aston Martin, Lambert told Automotive News Europe, Jaeger LeCoultre is working not just on a "plain" grade 5 titanium model, limited to 999 units, but also a special rose-gold edition in just 300 examples.

"This is a world first," said Lambert. "We have miniaturized the DBS transponder electronics into the base of the watch, so you can lock and unlock the car by touching the watch."

The DBS owner need never use a key again, said Lambert. "The watch is something that's always on you, that you can't lose."

The fictional character Agent 007 never knew the cost of the gadgets M's inventors dreamed up for him, but for the DBS buyer the price of this exclusivity is, ahem, modest: just 25,000 euros ($34,500) beyond the cost of the car.

"But don't worry," added Lambert. "We will find ways of making it more expensive."

You may e-mail Tony Lewin at autonews@crain.com