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Reducing eye strain, Preventing muscle stiffness, Taking frequent short breaks – iSimple Handheld PC 680/680e User Manual

Page 179

Reducing eye strain, Preventing muscle stiffness, Taking frequent short breaks | iSimple Handheld PC 680/680e User Manual | Page 179 / 202 Reducing eye strain, Preventing muscle stiffness, Taking frequent short breaks | iSimple Handheld PC 680/680e User Manual | Page 179 / 202