On the Surface Pro 4, the Uogic pen does everything the MS pen can but at a much better price. The slim look and the weight of the Uogic are very appealing. The side button is great. The Bluetooth shortcut button is responsive and can be configured in the Windows pen settings (I configured two clicks to open the photo editor, for example). Uogisch scores very well for typing feel. No comment on pen tilt as SP4 doesn't support it. Conclusion: The Uogic Pen is now my favorite pen.
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