If your dog is barking and giving you a headache all the time, then this is the right time to use a bark collar on the dog. With this dog collar, the beep vibration that is triggered by the barking of your good dog is painless yet effective enough to teach the dog to stop barking. 5-level adjustable bark recognition sensitivity allows you to adjust the collar according to the ambient noise. Automatic Anti-bark: This bark collar adopts an intelligent recognition IC, which can detect dog barking at a particular frequency and decibel and effectively prevent false triggering by barks of other dogs or environmental noise. 5-Level Adjustable Sensitivity: 5-level adjustable bark recognition sensitivity allows you to adjust the collar according to the ambient noise. For the first time usage, please choose the 3rd. level recognition level. Vibration & Beep Warning: With no electric shocks or spiky prongs, this collar applies beep warning and 2-level vibration to stop barking. If the dog ignores the warning, the frequency and intensity of vibration will be increased, humane, safe and effective. Adjustable Circumference & IP67 Waterproof: With an adjustable neck circumference of 3.15-26in, suitable for small dogs between 5-18lbs. This IP67 waterproof collar can work normally when your dog swims or runs in the rain. Make sure that the charging port is well-sealed before the dog runs into water. Long Standby: After being fully charged for about 2hrs, the standby time is up to 120Hrs. No need to charge it frequently. Brand: iMounTEK Product Type: Anti-bark Collar Color: Black Material: ABS Input: DC5V 1A Battery: Built-in 250MA Polymer Lithium Charging Time: 2Hrs Standby Time: 100-120Hrs Waterproof Rate: IP67 Adjustable Neck Circumference: 8cm-66cm/3.15in-26in Recommended Dog Weight: 5-18lbs USB Cable Length: 51cm/20in Device Size: 4.5*3.8*2.6cm/1.8*1.5*1in Device Weight: 30g/0.07lbs Package Size: 10x9.5x4.5cm/3.94x3.74x1.77in Package Weight: 101g/0.22lbs 1* Anti-bark Collar 1*Strap 1*USB Cable 1*User Manual