High-power silicon cell converts light directly into electricity
to operate motor. Exceptionally high output, 1/2 V with 40
to 50 milliamperes current output in bright sunlight. Solar
cell approximately 6.4 cm2, with plastic diffusing lens and
protective mounting. Motor with special anti-friction bearings
revolves 20 to 400 times per minute in bright light with small
propeller attached to shaft.