PETITE DESIGN: This receiver is perfect for small dogs with its compact design. It’s designed for dogs up to 7 pounds or more and is perfect for obedience or field training. It’ll fit comfortably and snug around your small companion. ONE-HANDED OPERATION: With 100 correction levels, you’ll have no problem finding the perfect level for your pet. The levels can be adjusted with one hand by using the front-facing Rheostat Dial. Finding the settings while in action has never been easier with its “no look” control design. CORRECTIONS: With 100 levels of Nick (quick ½-second) and Constant (up to 12 seconds) corrections, you’ll have no problem finding the perfect level for your pet. The levels can be adjusted with one hand by using the front-facing Rheostat Dial.