Monitor Product Model Description Action   GD-500HA *User control:LED digital control *Picture tube diagonal:15"（38.1cm） Click for more detail GD-500TB * User controls: LED digital control (light display) * Picture Tube Diagonal: 15 Inches Click for more detail GD-700TB *User controls:OSD Screen menu control *Picture tube diagonal:17"（43.2cm） Click for more detail GD-700FT * User controls: front panel, OSD screen menu control *Picture tube diagonal:Pure flat higher resolution picture tube,low radiation,Non-Glare TCO plating. Click for more detail