Boston Advance® Contact Lens Solution, 1 ounce Solution, 1 Each Larynogoscope Supplies 4 Channel Combination * Easy to add modularity Style:Right Ear 4 Channel Combination * Easy to add modularity allows the addition of two additional channels of electrotherapy light therapy or a battery module * High contrast 5 (13 cm) FSTN LCD monochromatic user interface * Two independent electrotherapy channels expandable to four independent channels * Multiple waveform electrotherapy six clinical waveforms: Interferential Premodulated High Volt Russian Symmetrical Biphasic and Microcurrent * Documentation of treatment data with Patient Data Cards * User defined protocols for your specific needs * Dual frequency ultrasound at 1 or 3 Footplate can be trimmed with scissors Heightens wearing comfort by removing lipids and proteins Boston Advance contains a system of multiple cleaning and friction enhancing agents that clean your lenses and prevent the accumulation of stubborn protein and lipid deposits which can impair the wearing comfort of your contact lenses