There are plenty of fancy dog trainers on the market these days but not many of them can be controlled with a smartphone. The PetSafe Smart Dog Trainer offers that and a whole lot more. It uses vibration, tone and static stimulation to reinforce commands and stop unwanted behavior.
This training collar has a range of 75 yards. It fits dogs 8lbs and up. The collar is rechargeable with a battery life of up to 40 hours.