Viewsonic TD2421 24″ LCD Touchscreen Monitor – 16:9 – 5 ms – Optical – Multi-touch Screen – 1920 x 1080 – Full HD – 16.7 Million Colors – 50,000,000:1 – 250 Nit – LED Backlight – Speakers – DVI – HDMI – USB – VGA – Black – EPEAT Silver – 3 Year

Viewsonic TD2220 22″ LCD Touchscreen Monitor – 5 ms – Optical – Multi-touch Screen – 1920 x 1080 – Full HD – 1,000:1 – 200 Nit – LED Backlight – DVI – USB – VGA – EPEAT Silver, ENERGY STAR, TCO Certified Displays 5.2, ErP, China Energy Label (CEL), WEEE, RoHS – 3 Year – EPEAT Silver, TCO Certified Displays 5.2, ErP, WEEE, RoHS, ENERGY STAR, China Energy Label (CEL) Compliance-ENERGY STAR; EPEAT Silver; RoHS; WEEE Compliance