First aid or emergency snake bite treatment devices include a belt or other securing member attached to a compression member, the compression member having an outwardly projecting wall that is configured to surround the snake bite and compress the skin about the snake bite a distance inward to thereby isolate the venom from the bite to impede the venom from entering a victim’s lymphatic system. A printer, includes a printing unit; a fixed blade; a movable blade provided to be movable relative to the fixed blade, and cut the printing medium with the fixed blade; and a tension mechanism applying a tensional force to the printing medium. The valves are operated by a common actuating element selectively positionable with respect to the valve members to open the valves. In a second mode, user data is retained in the second operating system for the use of the second operating system or processes running on the second operating system.