PetsPlus Dog Whistle For Dog Training & Barking Control With Adjustable Ultrasonic Frequency, Includes Premium Quality Lanyard & E-Book With 100 Dog Training Tips GUARANTEED TO STOP BARKING AND TRAIN DOGS to sit, stay, come. Use for basic and professional dog training. SAFE training for your dog with no choking or shocking compare to shock collars. FREE BONUS E-BOOK With 100 DOG TRAINING TIPS ADJUSTABLE sound frequency can be adjusted to a sound your dog hears best. Perfect for long distance calling. Great tool to take on your outdoor activities such as camping, hiking, and even hunting COMPACT & LIGHTWEIGHT: Small convenient design for best portability Pets Plus QUALITY BRANDED LANYARD included for easy carry and fast access. Stylish branded lanyard with double buckles to keep it secure on your active training sessions GREAT GIFT for all pet lovers and trainers. 100% GUARANTEED to work or return it for a full refund. See the descriptions below for a few tips to help you get started