This EtherScope Combo Includes: Two EXG-300E-KT-X2. Each unit comes with one year of AllyCare support (EXG-300-1YS). Purchase two EXG-300-1YS for an additional 1 year of AllyCare Support, or two EXG-300-3YS for an additional 3 years of AllyCare Support. Learn more about the EtherScope