The H2O Add-On Collar unit can be added to any existing H2O 1800 PLUS series training system (excluding Beeper models) to expand your unit up to a 3-dog system. This Add-On Collar can also replace a lost or damaged collar for all H2O 1800 and 1800 PLUS se
View full description
Item# : SPM13143861303
Model # : H2OADD-O
Accessories & Attachments: