A surgical hair trimmer is provided including a handle assembly including a power source, a drive motor connected to the power source and having a drive shaft extending therefrom, and a release mechanism configured and adapted for single handed operation; and a blade assembly including a pair of blades wherein at least one of the pair of blades is movable with respect to the other of the pair of blades, an interconnect configured and adapted to operatively couple the drive shaft to the movable blade when the blade assembly is connected to the handle assembly, and engagement structure configured and adapted to selectively engage the release mechanism of the handle assembly. In use, actuation of the release mechanism, when the blade assembly is connected to the handle assembly, jettisons the blade assembly from the handle assembly.