Dogtra Dogtra IQ Mini Tracking E-Collar Black IQ MINI. It is paired with the lightest and smallest receiver offered weighing 1.3 ounces and with ergonomically shaped plastic contact points. Features include a 400-yard range 100 nick/constant stimulation levels and pager vibration.The IQ MINI Receiver has been tested and rated IPX9K for supreme waterproof functionality. Specifications for Dogtra Dogtra IQ Mini Tracking E-Collar: Manufacturer: Dogtra Color: Black Features of Dogtra IQ Mini Tracking E-Collar: Petite form for smaller dogs Lightest and smallest receiver weighs 1.3 ounces 400 yard range 100 nick/constant stimulation levels and non-stimulating pager vibration Fits dogs as small as 7 lbs Package Contents: Dogtra IQ Mini Tracking E-Collar Dogtra IQ MINI: Dogtra IQ Mini Tracking E-Collar Black