The Company of Animals High Frequency Whistle is a professional dog training tool that produces adjustable high-frequency sounds for effective long-distance communication with your dog. This compact whistle features an adjustable pitch mechanism to customize the frequency to your dog's hearing sensitivity. Key features: • Adjustable sound pitch to suit individual dogs • Provides clear signal from a distance • Durable metal construction • Compact size with keyring attachment • Professional-grade training tool • Recommended by dog training experts • Suitable for distance training and recall This whistle is part of the Company of Animals' professional training equipment line, established in 1979. The adjustable frequency feature allows trainers to find the most effective pitch for their specific dog, making it particularly useful for households with multiple dogs. The metal construction ensures longevity and consistent performance in various weather conditions. The keyring attachment makes it convenient to carry and always accessible for training sessions.