La description

Still worrying about missing your beloved pet dog during the night? Now our LED light dog collar offers you an invisible fence of your puppy. Just simply tie it on your pet dog and turn it on, the collar will tell you the safety of your pet and where it is exactly. *7” to *7” length adjustable suitable for different kinds of dogs and never make them uncomfortable.

Specification:
Brand new in poly box
Material: Nylon
Color: black
Size: (approx) *7—*7”L adjustable X 1"W
Power by 1X lithium cell CR***2 (included)
3 functional (A:on/off B:quick flashing C:slow flashing)
Colour: red  yellow  blue green  white                       
Tape color: red yellow blue  black