SportDOG Brand® TEK Series 2.0 GPS + E-Collar

10 mile range 99 levels of static stimulation; Option to train with vibration and tone Expandable to 21 dogs with purchase of additional TEK-2AD or TEK-2L Add-A-Dog® Collars 1:100;000 preloaded topo maps with unlimited lifetime map updates Collar Receiver is DryTek® waterproof and submersible to 25 feet; Liquidproof Handheld Device