AGPtek 4 in 1 Pet Remote Trainer Dog Electric Training Shock & Vibrate Collar for 1 Small Medium Dog

Its a 4 functional [Instant Static Impulse + Static Impulse after Vibration (warning before static impulse) + Whistle Signal + LED light] remote training collar.
It's is an electronic dog training system with a working range up to 800 feet.
This compact, easy to operate system will control bad behavior and dogs who run off when taken outdoors for exercise.
As we all know an out-of-control dog can be a danger to themselves and others.
Training collars can help you achieve a well trained and contented dog within days.
This collar is suitable for small, medium and large dogs up to 70 pounds.

Matching Receiver and Transmitter :
Turn on the transmitter by the switch on right side of it
Install the batteries for the receiver. The LED insinde the receiver starts to keep flashing.
Press vibration or shock button immediately after batteries are put into the receiver firmly, then the LED will stop flashing and only light which indicates that the transmitter and the receiver have matched each other successfully.
If LED stops flashing on its own without press any button in the transmitter, tanke out the batteries. Wait for at least 10 Seconds and try step 2 again.
Put the cover on the receiver firmly
Attach the receiver to the collar.

Specifications-Collar:
Length: 38mm Height: 66mm Width: 36mm
Weight 56g (module + battery)
Collar length adjustable from 8 inches to 20 inches
Power: 2* 1.5V AAA battery (included)
Water Resistant and shockproof
Specifications-Handset:
Length: 123mm Height: 27mm Width: 45mm
Weight: 97g (with battery)
Power: 1*9V batteries (included)
LED signal light and illumination at night
The sound function for attracting attention.