Primer® Unna Boot with Calamine Zinc Oxide, 4 Inch x 10 Yard, 1 Each Sheets Visual Signaling Top mounted MSHQ BH190XL Visual Signaling Top mounted flashing lights helps to verify that the monitor is armed (slow green flash) and locate the monitor when alarming (fast red flash) perfect for nighttime use 2 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 Hardening and caking of this bandage is prevented by its lack of gelatin Includes calamine: Calamine is a combination of zinc oxide and 0