Can be powered from rechargable battery, 2 AA cells, or 4.5v external source. The manual claims 40-60 minutes of radio operation after a brisk crank of 120 RPM for 90 seconds.
Antenna is 65 cm telescoping whip; no jack for external antenna.
I can receive several strong SW stations, but not getting WWV at
1700 localtime. AM and FM commercial broadcast reception is very
good, and there's a swell carrying case.