Up to 250-yard range. Expandable to up to 3 dogs with the Add-A-Dog Receivers. Waterproof transmitter & receiver (receiver dimensions: 65mmx30mmx40mm overall). Tone-only button. Eight levels each of continuous stimulation and momentary stimulation. Rechargeable NiMH batteries included. These should last for years, but replaceable battery packs are obtainable.
Youtube has a series of three helpful videos about dog training with the variable shock trainer. Click here to see it.
A manual for this item can be found by clicking here
