Ultrasonic Dog Whistle — portable, adjustable training tool made from durable aluminum alloy Key benefits Reliable control: Precise frequency adjustment lets you find the tone that gets the fastest, clearest response from your pet so you can shape consistent behavior. Convenient to carry: Use-anywhere design with included lanyard and locking nuts and caps keeps the whistle secure and ready when you need it. Durable construction: Aluminum alloy housing resists wear for long-term home and outdoor use. Multi-pet compatibility: Effective for training both dogs and cats when you tune to the right frequency. What it does Produces an ultrasonic tone you can vary with simple adjustments to identify the frequency that prompts the strongest response. Use the strongest, repeatable response as the cue for a command; repeat training until the behavior becomes reliable. Locks in your chosen setting with included caps and nuts so the frequency does not shift in use. How to use Adjust the whistle and observe your pet’s reaction. Select the frequency that produces the clearest, quickest response and lock the setting. Reinforce the desired behavior with praise or a reward immediately after the response; repeat short sessions for consistent results. Practical scenarios Outdoor recall: Reinforce a reliable come when called in parks or on walks without shouting. Home obedience: Establish sit, stay, or quiet commands during indoor training sessions. Multi-pet situations: Quickly test frequencies to find one that reaches a specific dog or cat without disturbing others. Specifications and features Material: Aluminum alloy for durability Accessories: Lanyard plus locking nuts and caps Function: Adjustable ultrasonic frequency; use-anywhere portability Compatibility: Suitable for dogs and cats Simple to use, built to last, and designed for repeatable training results without complex electronics or batteries.