Petrainer 1000 yd Remote Dog Training E-Collar, 6.37 by 2.12 by 5.78" 1000M remote range Powered by battery Free combination among 3 modes: static shock/ vibration/ beep 0-99 levels of beep, vibration and static with big electric current stimulate, more effective for unruly dog High quality nylon strap (with Antenna inside) adjusts from 37cm to 60cm