Description: 1.Three adjustment: arbitrary replacement training, create only obedient dog. Upscale: suitable for daytime people, noisy dog walk away when using mid-range. Mid range: used when training dogs. Low blocking: suitable for late. Avoid nuisance usage 2.High grade steel material is resistant to abrasion and abrasion and feels comfortable. 3.Button: press button click will cause dog attention wait for dog past when give snacks. 4.Tuning push button 3 gear adjustment: treble tenor bottom tone. 5.Flexible rubber bracelet, comfortable and convenient wear. Specifications: Name: training ring 3 gear adjustment. Material: material of stainless steel, stainless steel hook. Weight: 20.8g. Applicable: whole breed of dog. Dimensions: 6.5 * width 4.3 * high 2 cm. Colour: light green, black, orange, sky blue, red, dark blue. High quality, nice feeling, each piece with connection rope can carry around, press the middle button, will send "quack" sound, quack sound as connection behavior and reward bridge, mark dog behavior, gradually causes natural reflex response Package Included: Dog Training Sound Piece*1