  |  |  |  |  |
| Operating resolution | 1000.0 dpi | 1000.0 dpi | 1000.0 dpi | 16000.0 dpi | 20000.0 dpi |
|---|---|---|---|---|---|
| Buttons type | Pressed buttons | Pressed buttons | Pressed buttons | N/A | Pressed buttons |
| Number of buttons | 3 | 3 | 5 | N/A | 8 |
| Scroll wheel | yes | yes | yes | N/A | yes |
| Number of wheels | 1 | 1 | 1 | N/A | 1 |
| Scroll type | Wheel | Wheel | Wheel | N/A | Ring |
| Scrolling directions | Vertical | Vertical | Vertical/Horizontal | N/A | Vertical |
| Width | 2.44 in | 2.17 in | 2.24 in | 2.36 in | 2.61 in |
|---|---|---|---|---|---|
| Height | 1.54 in | 3.74 in | 1.54 in | 1.65 in | 1.49 in |
| Depth | 4.37 in | 1.52 in | 3.73 in | 5.12 in | 4.99 in |
| Weight | 2.29 oz | 2.96 oz | 3.28 oz | N/A | 2.61 oz |
| Power source | Batteries | Batteries | Batteries | N/A | Batteries |
|---|---|---|---|---|---|
| Battery type | R6 | Alkaline | R6 | R6 | Built-in battery |
| Charging station included | no | no | N/A | N/A | N/A |
| Batteries included | yes | yes | yes | N/A | N/A |
| Number of batteries supported | 1 | 1 | 1 | N/A | N/A |
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