This full size no-bark trainer uses a standard 9V user replaceable battery.

Features:

Newly redesigned! Smaller, more Lightweight Collar
Fits medium to extra large Dogs
Uses a Standard 9 Volt battery (not included)
Nine adjustable levels of intensity
Automatic four-second safety delay
Vibration Sensor only picks up vocal cord vibrations eliminating unnecessary “shock” from extraneous noises or dog’s tags
Completely Waterproof
1 year warranty