It means the Surface Book 3 can turn into a tablet once it's detached from the ... Microsoft says the 13-inch Surface Book 3 has a 15.5-hour battery life, and the 15-inch model has a 17.5-hour ...

You can then use the display as a standalone tablet ... Silver or Space Gray—while the Surface Book 3 comes only in Platinum. Collaboration and Battery Life With video and audio conferencing ...