Dog Training Collar, Breett&reg; LCD Display Pet Dog Training Collar of 300 Meters Range with 1-100 level Shock and Vibration as Safety Voltage for Pets Dog training collar, rechargeable , 2 dog training at same time. 300 meters remote control electric shock devices with 4 modes: static shock / vibration / beep / light, provides a professional 100 level shock and 100 level vibration, it has good effect. Intelligent and humanized system, this current comes with a shock strength of 7-9V and is considered as safety voltage. It will not bring any damage to your dog. Convenience of operation, easy-to-read LCD screen shows the stimulation, featured power saving design. Training Collar, High quality materials, durable and adjustable nylon strap (length from 14" to 23") .