"SureStim M Plus Additional Rx Brand New Includes Two Year Warranty, The Dogtra SureStim M-PLUS RX is the extra collar for SureStim M Plus receiver which can add up to 2 dogs on the SureStim M Plus remote trainer
It is fully waterproof and is ideal for small / medium size dogs over 15 lbs. M-PLUS RX Features: SureStim M Plus Additional Collar, For dogs over 15 pounds, Range up to 1/2 mile, Low to Medium Power, Nick, Constant, and Non-stimulation pager vibration, Fully waterproof, Available in two different colors"
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