20 TECH ADVISOR • MARCH 2020REVIEW
expires, with earbuds plugged in. This simulates
one experience: watching downloaded movies
on a transatlantic flight. In this case, because the
Surface Pro X lacks a headphone jack, we tried two
things: we streamed audio over Bluetooth to a pair
of headphones, and separately, we used a USB-C to
3.5mm dongle to perform the same test.
We tested using PCMark 10’s battery test,
performing a scripted mix of Office apps and web
browsing. I also used the Surface Pro X in a day’s work,
working on London’s underground on the way to work,
and then on a desktop performing my day’s work.
The Surface Pro X’s battery life is decent for a
tablet or a laptop, but well short of the lofty promisesThe Surface Pro X gets just short of nine hours on a USB-C
dongle, which is sufficient but not particularly impressive