1,STAINLESS STEEL: Bird training whistle is made of stainless steel, which is strong and durable and not easily damaged, and the whistle has no built in peas, making it easy to clean. 2,LOUD SOUND: Bird stainless steel whistle is very loud and provides a high decibel sound, the winding training whistle is perfect for training birds. 3,MULTIFUNCTIONAL: Bird whistle is not only used for training birds, but also for hiking, camping, climbing, dog training, boating, games, outdoor courses, and even for everyday use. 4,PORTABLE: Bird ultrasonic whistle is small and lightweight, making it easy to carry and use without taking up too much space or adding to the burden. 5,WITH KEYCHAIN: Bird ultrasonic training whistle has a keychain that can be hung on backpacks, keychains, pockets, and also on belts, making it very easy to carry. 1 x Bird Training Whistle Item Type: Bird Training WhistleMaterial: Stainless Steel Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.