TECKNET Ergonomic Mouse, 4800 DPI Wireless Vertical Mouse with 5 Adjustable DPI Levels, 6 Buttons 2.4GHz Optical Carpal Tunnel Mouses for Laptop, Desktop, PC, MacBook - Black

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TECKNET Wireless Mouse, 2.4G USB Computer Mouse with 6-Level Adjustable 4800 DPI, Silent Quiet Click，30 Months Battery, Ergonomic Grips, 6 Buttons Portable for PC, Chromebook, Mac - Grey

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TECKNET Wireless Mouse, 2.4G Ergonomic Optical Mouse, Computer Mouse for Laptop, PC, Computer, Chromebook, Notebook, 6 Buttons, 24 Months Battery Life, 2600 DPI, 5 Adjustment Levels

TECKNET Wireless Doorbell, Self-Powered Doorbell, 0-110db Plug-through Wireless Doorbell Ringer for Homes Classroom, IP66 Waterproof 1300ft Door Chime with Extra Socket, 60 Chimes, LED Light (White) - Amazon.com

TECKNET Ergonomic Mouse, Wireless Bluetooth Vertical Mouse, 4800 DPI Optical Tracking, 6 Adjustable DPI, Quiet Clicks, 2.4GHz with USB A Receiver, 12 Months Battery, 6 Buttons, Wide Compatibility