No one would expect optional extras to be cheap on Bentley’s first SUV but an option that costs as much as a brand new 4-room HDB flat? Now that's something. So what's this option? It's a bespoke Mulliner Tourbillon by Breitling mechanical clock, made exclusively for the luxury Bentayga.

According to Bentley, the clock 'has the most complex of watch mechanisms' as it is automatically wound by a dedicated high-precision winding mechanism within the car. Every 15 minutes, the clock spins three times. Only available in solid gold, owners will be able to choose whether they want it in rose or white gold.

While Bentley did not disclose the price of the timepiece, Chris Harris, a well-known automotive journalist in U.K. claims it costs nearly S$330,000 there. In perspective, the Bentayga in U.K. costs a bit more than S$350 grand only. So will you get an option nearly as expensive as the car itself? Let us know!