ALEKO no bark collar is top of the Line bark control collar is high quality bark collar adjusts to your dog temperament. Waterproof bark collar is best for medium to large dogs, of all temperament types, even stubborn breeds. With different modes of operation, you can find the best bark control option for your dog. This remote wireless product is the most effective and safest tool for training pets. By use of it, the pet can understand the intention of its owner. The collar is designed soft and light, no harm to the pets. Rechargeable design is energy saving. Following the correct operational instructions, you can effectively train your pets in a short run. This product is also compatible with plug in US standard and operation voltage. Patented design Rechargeable and Waterproof For mild-mannered to stubborn disposition dogs Easy to use and ergonomic transmitter Rheostat dial allows for gradual adjustment in stimulation intensity With no jumps between 0 and 100 levels 1000 feet range Static and vibration mode No external antenna on collar. Easily visible LCD screen displays level of stimulation Over 3,000 different identity codes to prevent conflicts with other e-collars. Three bar battery life indicator on.