Abstract: A compact, durable, lightweight and long lasting electrical lighting device which is economical to manufacture and able to be releasably attached to various objects, particularly thinly cross-sectioned members, without unduly burdening the object by its being connected thereto, is composed of a plastic cylindrical housing, a first endcap connected to one end of the housing, a light emitting member mounted to the first endcap, one or more batteries located within the housing for powering the light emitting member, a second endcap slidably connected with the other end of the housing so as to be rotatably and axially guided by slots on the surface of the housing adjacent thereto, a spring for biasing the second endcap away from the light emitting member so as to effect an open circuit between the light emitting member and the batteries, electrical leads and contacts for selectively effecting a closed circuit between the batteries and the light emitting member when the second end cap, serving as an electrical swi