D.T. SYSTEMS H2O Receiver Collar color:Green Receiver It is especially recommended for

It is especially recommended for Covert's wireless cameras

Double outlet valve ensuring continuous flow

One (1) Suture - Nylon - 3-0

manual prime system

snow and other loose terrain

D.T. SYSTEMS H2O Receiver Collar color:Green Receiver It is especially recommended forThe 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 series systems (excluding Beeper models). Programming to your existing system is fast and simple. Key Features: Digital Technology Adds to any H2O 1800 PLUS series training system(excluding Beeper