D.T. Systems Master Retriever Additional Collar Green Flea and Tick This creates two unique levels

This creates two unique levels for your small pet to play and sleep on

you will hear a clicking sound which is the self-locking positioning feature

Easy setup with rubber pads on bottom to prevent scratching on carpet

also available in an economical 160-pack canister that's ideal for home or grooming shop

D.T. Systems Master Retriever Additional Collar Green Flea and Tick This creates two unique levelsAdd on collar for the Master Retriever dog remote trainer. Features: Collar Unit 2. 25" x 1. 5" x 1. 25", 4. 7 oz. (with belt). Expand your DT Systems R. A. P. T. 1400 system up to 3 dogs with these add on receivers. 100% waterproof