This mini no-bark trainer uses a user replaceable 6V battery.

Features

Newly redesigned Digital System with Micro-processor
Adjustable Collar fits small to large dogs.
Replaceable 6 Volt Battery
System delivers 1/2 second corrective stimulation
Automatic three-second safety delay
Built in Magnetic ON/OFF system
Digital Numeric Display shows 8 different intensity levels
Vibration Sensor only picks up vocal cord vibrations
eliminating unnecessary “shock” from extraneous noises or dog’s tags
Data Memory System saves last used intensity setting
Completely Waterproof
1 year warranty