Tri-tronics PRO 500 G2 trains 1 dog and has a 1 mile range. Unit has been thoroughly tested and works perfectly. Unit has a new professionally refurbished battery pack which should last for many years. We send a procedure for pairing your collars to this unit. This was one of the top of the line training units from Tri-tronics-Made in the USA!!!!

    

    We ship via USPS First Class Mail to the United States Only. We will ship as soon as we receive payment. Please feel free to contact us with any questions and or concerns. Thanks.