Portable Woodpecker PRO broadcasts actual recorded distress cries of flicker and downy woodpeckers, yellow-bellied sapsuckers, and natural calls of 4 predators to scare destructive woodpeckers away from property. Cries are programmable for volume, hours of operation, and random or sequential play to keep birds unsettled and less likely to remain around wooden buildings, utility poles, fenced areas, and more. Measures 10.25 in. by 3.75 in. and weighs 4 lbs. One unit with self-contained speaker broadcasts over 1 acre (.4 hectares). Super Woodpecker PRO model uses 4 remote speakers to cover 6 acres (2.4 hectares). Both units operate with standard 110-v. (adapter included) or with 12-v. d.c., deep-cycle marine battery that recharges using integral solar panel. Repeller does not physically harm birds. Bird-X, Inc., Chicago, IL