dog training collar 800M remote rechargeable and waterproof dog trainer

I am extremely pleased with this product and the company's customer service <3I have peace of mind with my dogs that were flight risks before using training collars. They generally come to me when I call and if they do not, a beep brings them quickly. I am certain just wearing the collars is a reminder to them to respond. I use the vibrate feature occasionally but never have to resort to the shock. We have them at near lowest setting.Thank you so much for your excellent customer service regarding my concern.I highly recommend this product as well as this seller :)