Ergonomic comfort, wireless design Work in comfort all day with our premium wireless ergonomic mouse. Navigate precisely with detent scrolling and access your most-used features with two programmable buttons. All-day comfort Ergonomic design promotes neutral hand position. Long battery life Holds a charge for up to 15 months. Connect up to three devices And switch seamlessly between them. Natural hand position Featuring a soft, easy-to-grip thumb rest for added comfort. Smooth and precise Machined aluminum scroll wheel, teflon base, and precise tracking sensor allow for easy navigation on a variety of surfaces. Light, durable design Featuring seamless finishes, in a variety of colors.