Abstract: A rearview device comprises a convex dome which has a reflective outer surface. The dome is hollow and a closure plate is snap-fitted into the open side of the dome. The plate has apertures in it through which a strap can be passed to enable the dome to be fitted to the wrist or arm. The space between the dome and the plate serves as a storage compartment. The dome, because it reflects search radar etc, can be used as a homing device to enable lost persons to be located.