Disclosed is a wrist-wearable electronic interface movably mounted on an arm-attachment mechanism. Interface moves from under-sleeve wrist-adjacent position to palm-adjacent position where it can be manipulated by the hand of the arm wearing the device. Alternately adaptable to telephones, audio recorders, remote controls, auto ID equipment, telephone call-blocking, and more. Alternative embodiment provides a wrist-mounted docking station. Another alternative embodiment includes a superior carpal tunnel syndrome therapy device. The system also includes novel battery chargers: (1) window-mounted, solar-powered; (2) mounted in an automobile that also includes an improved odometer, license plate, and cabin air filtration system.