Amazon with Uineer has the Uineer Wireless Ergonomic Vertical Mouse with Tri-Mode Connectivity (Black) for $27 - 50% off with coupon code A06500601 at checkout = $13.49 with free shipping on $35+ or with Prime. Bluetooth 5.0/4.0 + 2.4G wireless mouse with simultaneous connection to 3 devices.

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