dog shock collars for 2 dogs with remote, rechargeable dog training collar with vibration shock beep modes, waterproof ecollar dog training collar with 1000ft range, shock collar for small, large dogs pierpier the pierpier is the prefect training system for people who are new to dog training. it’s affordable, easy to use and extremely effective. this system provides 4 different functions which include: static shock, vibration, standard tone and light. there are 100 different levels of static shock and vibration to accommodate the widest range of dogs. this e-collar can range up to 330 yards making it very effective for loose leash walking, barking, digging, bad behaviour and obedience training. it has a simplistic design making it easy to use and your training process less painful and as stress free as possible!