Dogtra 1902S HANDSFREE Plus Boost and Lock, Expandable 2-Dog Remote Training E-Collar

These e-collars are a 2-dog Handsfree  version of the 1900S and feature a toggle switch on the transmitter to allow toggling between the two collars. Features: NEW BOOST & LOCK FEATURES: Enhance your training experience with the superior Boost button. The constant correction with a customizable Boost button allows for instant level increases to immediately recall you dog. Go from training mode to obedience mode easily by setting your own custom Boost to jump to your enhanced training level seamlessly. The newly introduced Safety Level Lock prevents unwanted or accidental level changes for an active training style EXPANDABLE HANDSFREE: Pair up to 14 HANDSFREE SQUARES to one transmitter for optimal performance in a diverse range of training scenarios. Instead of carrying your transmitter, you can strap the HANDSFREE SQUARE around your wrist, palm, or fingers to operate remotely. The HANDSFREE SQUARE provides discreet control to direct training association towards the trainer and