Keyboard Features? These large print keyboards will give you greater enjoyment working and playing on the computer, with greater keystroke accuracy and less eyestrain. They were designed specifically for those with conditions that cause visual impairment or low vision, such as macular degeneration, glaucoma, diabetic retinopathy, and cataracts. They're also helpful for anyone who is working in low-light conditions or learning to type. Spill resistant keyboard is designed to keep electronic components of keyboard safe.(Be sure to air dry completely after spill before further use.) Product Specifications? Item model number?Large 689 Size?5 inch H x 17 inch L x 0.98 inch W / 128 mm H x 435 mm L x 25 mm W Color?Black. Weight?375g Key number?104 Cable length?1.3m The key material?PVC Key cap material?ABS Connectivity technology?Wired USB Key life?more than 15 million times Package list? 1 x Wired USB Large Print Keyboard