COA No Bark Collar Small Size:3.79 Litre Yummy Orange Includes: 1 x Indoor Wall Mounted Includes: 1 x Indoor Wall Mounted Transmitter 1 x Adjustable Reciever 2 x USB Charging Cable 1 x 300m Boundary Wire 2 x Contact Probes 4 x Screw 1 x Power Plug 1 x AC Adaptor 2 x Test Light 2 x Training Flags 1 x Use Manual Packing Detail QTY: 20pcs ctn GROSS Weight (kg): 18KGS CTN (cm): 54x44x28cm Adjustable TPU collar band to fit dogs of any size 6 The Clix No Bark Collar helps you stop your dog's excessive barking effectively without hurting him with a shock collar It has a microphone which detects barking and automatically emits either a sound or a vibration to interrupt the dog's barking