Dog Shock Collar Harmless Electric Dog Training System- 7 Sensitivity Adjustable Product Details Anti-Bark Collars were improved in sensibility and lifetime. It stops barking with progressively increasing sound and shock, controlled by a microprocessor distinguishing your dog's bark from other environmental noises; most pets will quickly understand the new sensation is telling them to be quiet. It can also be adjusted to control the sensitivity of the voice, according to the loudness of dogs barking. This technique of progressively increasing sound, as well as shock is more humane and effective in breaking the barking habit than conventional shocking bark control collars. How to set proper sensitivity level. a. If you have two dogs or live in a noisy environment, please set a lower level. It could avoid interference of other dogs or car trumpet. b. After set level, in living environment test 24 hours before using it to ensure it wouldn't be interfered. c. If the collar doesn't beeps, please increase by pressing the "+" button and blow the hole to test it after change a new battery. Tips: If you notice that the collar is still ineffective on your dog after "maximum" sensitivity, it is highly likely that the probes are not long enough and that they are not touching the skin of your dog correctly. Please kindly check that and switch to longer metal probes or cut some hair. Package Includes: - 1 x Device - 1 x Adjustable Collar - 1 x Tester - 2 x Long Electrodes - 2 x Short Electrodes - User Manual. Warranty / Returns / Refunds: If there are any issues with the product or if you're unsatisfied in any way, please kindly let us know. Our professional buyer support team would reply timely and try to make your satisfied with solutions.  Humane and harmless to your dog. Generally recommended for medium dogs. Don't recommend for too small dogs, like less than six months old. Safety precaution. Collar will beep twice before shock. You have enough time to stop using it, if your dog feels uncomfortable. The next 5 times shock intensity will gradually increase, you could stop using collar to avoid too higher intensity . After the stimulations repeat through 7 correction levels, collar will be into a sleep model for a minute to protect dogs. You could stop using collar, if it is ineffective for your dog. Use plastic probes instead of metal probes, then collar will not shock your dog at all. (Not include plastic probes in package). Payment Details We stand behind our products.Items can be returned for exchange or full refund within 30 days from the date you receive your merchandise. We are not responsible for any purchase after this 30-day period. Shipping Details Shipping is FREE to all addresses other than APO/PO boxes in the lower 48 states. Our stock all ships from our US-based warehouses. Shipped via USPS or UPS (depending on location and package weight) Unless stated otherwise, all orders will ship within 24 hours of your payment being processed. Check our feedback to see the great reviews of FAST shipping we offer. Delivery & Return Policy Details Domestic lower 48 free shipping is expedited. We have many different shipping locations depending on the product you buy and the shipping location that you choose. We try to ship most items within 24 hours of payment Monday-Friday. Most orders are in transit for two days but some may take longer. If you have a specific time frame please contact us before you make the purchase.Return shipping is the responsibility of buyer unless the return is a result of our mistake . We will pay for shipping replacement back to you if an exchange is requested. Dog Shock Collar Harmless Electric Dog Training System- 7 Sensitivity Adjustable Humane and harmless to your dog. Generally recommended for medium dogs. Don't recommend for too small dogs, like less than six months old. Safety precaution.Collar will beep twice before shock. You have enough time to stop using it, if your dog feels uncomfortable.The next 5 times shock intensity will gradually increase, you could stop using collar to avoid too higher intensity .After the stimulations repeat through 7 correction levels, collar will be into a sleep model for a minute to protect dogs. You could stop using collar, if it is ineffective for your dog.Use plastic probes instead of metal probes, then collar will not shock your dog at all. (Not include plastic probes in package). Dog Shock Collar, Harmless Electric Dog