Dogtra 1900S – Ergonomic 3/4-Mile IPX9K Waterproof High-Output Remote Dog Training E-Collar

ONE-HANDED OPERATION: With 100 levels to choose from, 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. The ergonomic transmitter also provides one-handed operation for two dogs.