300M Rechargeable Dog Training Shock Collar Waterproof with Beep Vibration Remote range up to 300m, Rechargeable and Waterproof, your dog can swim in the water;it is expandable to Train 2 dogs 4 working modes: static shock, vibration, beep and light;100 levels of vibration & static with big electric current stimulate, more effective for unruly dog Power saving design with automatic standby;The most effective and safest training system with auto-protect mode Durable and adjustable TPU strap (length from 67cm to 71cm) Patented design and certificate with CE, R&TTE, RoHS and FCC