Vastar Remote Dog Training Collar for Small and Large Breed Vibration/Shock E-Collar - DC129 Vastar Remote Collar is the easiest to use on the market. No difficult mode set ups, just simple to use, color coded one push correction buttons 16 levels of correction for both vibration and static shock to fit all dog sizes and temperaments Easily save battery life by turning the collar on and off. Also includes 4 AAA Batteries which are super easy to replace if needed