Adjustable Silent Dog Whistle For Bark Control & Training. Enhance Your Pet Training with the Silver Ultrasonic Dog Whistle, Engineered for Precise Communication and Control. Crafted from Durable Stainless Steel and High-quality Copper, It Boasts a Sleek Nickel-plated Finish, Ensuring Longevity and Style. This Whistle Emits a Gentle Sound That's Perfect for a Variety of Training Scenarios, Making It a Must-have for Any Pet Owner. Its Compact Dimensions of 5.3cm by 0.8cm Make It Perfect for On-the-go Use. With an Adjustable Pitch Feature, You Can Customize the Frequency to Effectively Capture Your Pet's Attention, Aiding in Reducing Excessive Barking and Teaching Essential Commands Like Come and Sit. It's Also a Thoughtful Gift for Pet Enthusiasts. Features: - Durable Construction with Stainless Steel and Premium Copper - Long-lasting and Stylish Nickel-plated Finish - Compact Size: 5.3cm X 0.8cm - Ideal for Dog Training - Portable and Non-electrical - Adjustable Frequency for Optimal Pet Response.