New Crystal 24K Gold Collagen Eye Mask, Anti Aging, Anti Wrinkle, Puffy Eyes, Remove Bags & Dark Circles Under Eye-131021 Fiddo's Two Collar Electric Training Collar is designed with RF434Mhz technology, offering a range of up to 330 yards and can train up to two dogs at a time. Rugged and 100% RAIN RESISTANT design allows your dog's collar and leash harness to stand up to rough outdoor play, rain or shine. 4 modes of operation: vibration, electric shock, beep, flashing lights. 100 available levels of static shock and vibration stimulation. Fits all dogs 15-100 lbs and collar sizes 7-26 inches. Includes one Remote Transmitter and 2 collars. Receiver's backlit LCD screen and easy to press buttons allow easy usage, and power saving battery saves you the hassle of constantly charging your unit. Note: attach prongs to screws before usage with your dog. Unhappy with your purchase in any way or have any questions? Email us via Buyer messages!