ProtoArc EM11 NL Wireless Ergonomic Vertical Mouse, Rechargeable, Black | 58° vertical design supports a natural wrist posture, connect 3 devices via Bluetooth/2.4G USB-A, 500mAh USB-C rechargeable.

Customers find this vertical mouse to be of high quality, comfortable, and ergonomically designed, with one customer noting the nice button placement. Moreover, the rechargeable battery life is impressive, and customers report meaningful wrist pain reduction. However, reliability and responsiveness receive mixed feedback - while some say it functions beautifully with no lag, others report it stops working consistently and the hand keeps slipping down. Despite these issues, customers consider it an excellent value for money.