Carries upto 110 kerbals including those in the cockpit.
Reaches Mach 1 in the lower kerbin atmosphere and upto Mach 2.5 subsequently using only the air breathing mode of the SABRE engines… may reach higher speeds in the closed cycle mode.
Can fly for a really long time using only liquid fuel.
You can change the type of fuel by right clicking on each of the passenger modules and changing their fuel setup.
Can land and travel on water if landed skillfully.
Take off speed (without pulling up): ~150 m/s