Petrainer 1000 yd Remote Multi-Functional Dog Training E-Collar, 9.29 by 2 by 7.55" 1000M remote range for 3 dogs Rechargeable and waterproof receiver 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