https://www.theverge.com/circuitbreaker/2018/12/12/18137577/caviar-iphone-xs-apple-watch-swiss-dream-gold-why

Russian accessory maker Caviar is known for strapping impractical gold-plated objects onto the backs of iPhones, like a gold-trimmed solar charging panel. But the company may have outdone itself this year with its latest variant of Apple’s phone: the iPhone XS Max “Swiss Dreams Watchphone” attaches a gold-plated Apple Watch onto the back of the phone for the low, low price of $21,050.