Sportdog The Answer Whistle. The Answer Whistle protects the handler's ears by directing the whistle's sound forward.Features:Easy-to-blow design Directs sound forward to protect handler's ears High-pitched sound No trill pealess design Won't freeze Specifications for Sportdog The Answer Whistle: Manufacturer: SportDOG Dimensions: 2.05 X 3.75 X 7.55 in Length: 7.55 in Package Contents: Sportdog The Answer Whistle Sportdog The Answer Whistle