Money laundering is the process of transforming the profits of crime and corruption into ostensibly 'legitimate' assets.
The Surface Book is on the heavy side at around 1.5kg, but its footprint, at 31.23cm wide by 23.21cm deep, is perfectly acceptable for a laptop with a 13.5-inch screen. For the record, the Surface Pro 4 has a footprint of 29.21cm wide by 20.14cm deep. The hinge design adds a bit of height to the back of the chassis, so that when closed the Surface Book is relatively thick at the back -- 2.28cm, tapering to 1.3cm at the front.
In terms of battery life, the Surface Pro 4 is claimed to offer 9 hours. The 2015 Surface Book bumps this up to 12 hours and the Surface Book with Performance Base offers 16 hours. Microsoft Surface Book 2016 goes super-powerful, increases battery life, amps graphics.