Garmin PRO 550 Remote Dog Trainer 1 Mile Expandable Handheld Agility Training Expands up to 38

Expands up to 38

Flap opening 10

Service Dogs: Train dogs to down-stay under tables

Works on openings up to 55' wide

If salt crystallizes inside unit

Garmin PRO 550 Remote Dog Trainer 1 Mile Expandable Handheld Agility Training Expands up to 38PRO 550 features vibration and tone settings, remotely operated beacon lights on the dog device to help locate your dog in low light, the ability to add an Upland Beeper (purchased separately), and a built in BarkLimiter, activated on the dog device, to help keep the peace at home. The PRO 550 uses the tried and true tube shaped design that trainers have come to love, but is easy to operate (and master) 1 handed so you can keep your eyes on your dog