Sportdog Brand In-ground Rechargeable Fence Add-a-dog Collar

Features: This is the Collar Receiver only; Compatible with the SportDOG Brand Rechargeable In-Ground Fence System only (SDF-100C, Not compatible with the In-Ground Fence (SDF-100A) or Contain + Train (SDF-CT), Rechargeable collar features Lithium-Ion batteries with 2-hour quick charge and one to two-month battery life: waterproof and submersible to 25 ft...

This is the Collar Receiver only; Compatible with the SportDOG Brand Rechargeable In-Ground Fence System only (SDF-100C) Not compatible with the In-Ground Fence (SDF-100A) or Contain + Train (SDF-CT) Rechargeable collar features Lithium-Ion batteries with 2-hour quick charge and one to two-month battery life: waterproof and submersible to 25 ft. with DryTek technology Contain an unlimited number of dogs with additional collars (SDF-CR); fits dogs 10 lb. and up. Receiver without strap- 2.60 L X 1.30 W X 1.23 D inches Collar gives tone (beep) and vibration (buzz) warning before moving to one of seven static stimulation levels (you choose the best level for your dog)