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The AutoUp ErgoRest E300 is a revolutionary vertical ergonomic mouse designed by orthopedic specialists to promote a natural handshake grip that eliminates forearm pronation. This unique posture dramatically reduces the risk of repetitive strain injuries, carpal tunnel syndrome, and wrist fatigue associated with traditional mouse use. The sculpted body positions your hand at a 57-degree angle, aligning your wrist and forearm naturally for hours of pain-free computing. Five programmable buttons including a dedicated back/forward pair handle everyday navigation without awkward reaching. The precision 1,600 DPI optical sensor delivers smooth, accurate tracking on any surface without requiring excessive wrist movement. A soft thumb rest padded with memory foam-inspired material provides additional support during prolonged use. The textured grip surface maintains secure control without tiring your fingers. USB wired connectivity ensures zero latency and no battery concerns. The ErgoRest E300 is sized for medium-to-large hands, with a companion compact model available for smaller hands. Cable management clips included in the package keep your workspace tidy. Plug-and-play compatibility means no driver installation required on Windows or macOS. DPI indicator LED helps you track your current sensitivity setting at a glance. The weighted base option adds stability for users who prefer a heavier feel. Clinical studies referenced in AutoUp’s design process indicate vertical mice can reduce muscle activity by up to 10% compared to standard designs. The AutoUp ErgoRest E300 is the smart choice for anyone prioritizing long-term hand health and workplace wellness.