Covers an adjustable circular area of up to 1/2 acre (180 feet diameter),Completely portable, no wire to bury,5 adjustable levels of correction plus beep-only mode,Run Through Protection
Set up in 1 to 2 hours-Collar-Height: 1"xWidth: 2"xDepth: 1"xWeight: 2.5 ozxTranslucent Smoke-colored CasexUses 6-volt (RFA-67) batteryxWaterproofxLow battery indicator (light will flash every 4 to 5 seconds).Interchangeable Contact Points (Long and Short).Screw off cap covering Correction Level Button.Concave interior wall (side facing throat).Curved washers,25 second safety timeout.