Einstein Dog Shock Collars are our newest line of dog shock collars but don’t hold that against them. They are aiming to make some big waves and change the training of dogs possibly impacting industry wide change. Einstein dog shock collars boast the lowest levels of stimulation of any brand of dog shock collars on the market. This is because they have found that through their lower levels of stimulation they are still able to effectively reprimand the dog’s behavior to where change occurs. Einstein dog shock collars area great buy and currently all of the units are rechargeable which is always a big plus.