Battery brand Energiser is charging itself up for a promotion linking it with the 20th James Bond film Die Another Day.
Scheduled to start in November to coincide with the film's release, the offer's big prize is a diamond worth £10,000. Champagne, two-way radios, PlayStation games and West End show tickets are also up for grabs.
Participants have to buy a pack of Energizer batteries, answer the question on an entry form and send it in. The first 2,000 entries will receive a free film poster, while 10 winners will be invited to a a secret London location in May next year. There, each will be given a code to unlock a briefcase which will contain one of the luxury gifts.
Support will come from PoS.
Marketing manger David Cutley said the company wanted to develop the category by doing something different from the usual bogof-style promotions in the run-up to Christmas.