Delta Garmin is a new series from Garmin that consists of a stylish and ergonomic handheld unit along with a subtle and compact dog device that is equally rugged, waterproof, and reliable. These training systems allow the used to select the correction type desired for their dog (tone, vibration, momentary, and continuous) based on proven Tri-Tronics Technology. This unit has three correction configurations allow user to select training option based on situation and dog temperament. Can add up to three dogs, display offers unique settings for each dog as well as quick change between dogs for timely correction. Has a consistent 1/2 mile range. Long lasting rechargeable batteries.