Sportdog Field Trainer 400 & 400S Electronic Dog Collar
These compact units are ideal for training in the yard, field or for hunting. Both the transmitter and receiver are waterproof and feature a 400-yard range with up to 16 levels of continuous or momentary stimulation and replaceable, rechargeable NiMH batteries. They both can be expanded to control up to 3 dogs by adding extra collars. The comfortable "soft coat" Transmitter finish makes this unit a pleasure to handle. The SD-400S offers all the features of the SD-400, but is specially designed for tougher, more stubborn dogs.