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Features: Includes 5pcs degree rotary encoder modules. Built-in unlimited rotation counts. With the buttons, can reset to the initial state to start counting from 0. Operating Voltage: 5V; Pulse Circle: 20. Can be used to control angular displacement.

DPI: 1000/1600/2400/3200/5500 , Switch Life: 10 million cycle ,Buttons: left, right, scroll wheel, DPI, fire key, advance, retreat , Light Effect: colorful

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All in One Memory Card Reader 1.Color: Black 2.Size: 7 X 4 X 1cm(L X W X H) 3.Cable Length: 52.5cm 4.Net weight:38g