Built to capture every moment with your dog, the Dogtra Combo e-collar gives you the immediate and accurate stimulation control by our unique Combination Boost Control system and advanced one-handed operation handheld Transmitter. Designed for dogs as small as 10 pounds, the Dogtra Combo is an intuitive and durable remote training tool– a great e-collar for pet training, hunting dogs, police K9 professionals, and serious amateurs. The versatile Dogtra Combo e-collar outputs Low-Mid stimulation in 1/2-mile range with the unique features necessary for professional e-collar trainers. The Dogtra Combo has 8 stimulation levels and is paired with the Combination Boost Control system that gives 3 levels of instant boost per stimulation level. The front facing Selector Step Dial and intuitively placed stimulation and non-stimulation input buttons on the functionally designed ergo dynamic handheld transmitter provides the ‘no-look’ control, letting you focus more on your dog.