The D.T. Systems Master Retriever 1100 E-Collar Dog Training Collar gives hunters effective dog-training ability up to 1,100 yards away without a lot of hassle. Able to accommodate up to 3 dogs (with Add-On Collars, not included), this expandable training system offers 16 intensity levels of Gentle Touch Nick and Continuous stimulation. This wide intensity range and the systems Vibration Assist no-shock option help you match the training to your dogs personality. Rechargeable, waterproof collar features rechargeable NiMH battery and Maxx-Range 360 internal collar antenna to pull in clear signals from any direction up to 1,100 yards away. Weighing just 4.7 oz., the 1100s tough and durable nylon collar adjusts from 7-22 in 1/2 increments to fit a wide range of dogs. Waterproof transmitter uses one 9V battery (not included). Built in magnetic ON/OFF system. Manufacturers Limited Lifetime Warranty. Color: Black. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Training Collars.