I really like this model. This is my second trainer collar for my very naughty dog! The last supplier I ordered from had a very small remote and I lost in the pasture. This remote is much larger and has some really nice features. First, you can lock it so you don't accidentally hit a button, cofusing your dog. The remote is light weight and multiple offers multiple options for your training needs. The vibration is strong and gets her attention, so I haven't had to use the shock function!