Product Name: 3 packs Pet Training Whistle with Hanging Rope
Material: Copper +polyester
Color: Black, White, Blue
Product size: Whistle, length 7.7cm/3.03inch, diameter 0.6cm/0.23inch. Rope length 43cm/16.93inch
Usage: Loosen the frequency adjustment screw. While blowing air into the intake, rotate the adjustment lever to the exact pitch. After adjusting the lever, tighten the sound wave adjustment screw. Each time, different flute playing methods are used to prescribe instruction such as "don't move", "sit down", "come over", etc. For example, "Don't move" - "Two short sounds", "Sit down" - "One long and one short", "Come over" - "Two long sounds".
Packing list: 3packs dog training whistle with 3 lanyards, 1 each in black, white, and blue