Brand New...taken out of the box for our new puppy only to realize that it was the wrong collar for our "contain + train" fence system and I've missed the return window! Box includes booklet, collar, charger, 2 sets of prongs (long/short), prong tester. Features & details COLLAR RECIEVER ONLY: Compatible with the SportDOG Brand Rechargeable In-Ground Fence System only (SDF-100C) CHECK COMPATIBILITY: Not compatible with the In-Ground Fence (SDF-100A) or Contain + Train (SDF-CT) RECHARGEABLE AND WATERPROOF: 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 UNLIMITED DOGS: Contain an unlimited number of dogs with additional collars (SDF-CR); fits dogs 10 lb. and up TONE, VIBRATE, AND STIM: 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) CUSTOMER CARE: Includes two-year manufacturer’s warranty; call our US-based customer care center for support