ProtoArc EM01 NL Trackball Mouse Wireless 2.4G Bluetooth Ergonomic Mouse Rechargeable Rollerball Mice for Laptop PC iPad Mac
Computer Peripherals
“The ProtoArc EM01 is a thumb-controlled trackball that combines a 34mm removable rollerball and adjustable tilt (up to 20°) with multi‑mode wireless connectivity (Bluetooth + 2.4G dongle) and USB‑C rechargeable power. It’s a solid ergonomic alternative to traditional mice for reducing wrist movement and offering rechargeable operation (Windows shows battery level), but it trades some build refinement (plasticky shell, louder clicks) and customization (no bundled software) for affordability — good for productivity users seeking reduced arm motion, less ideal for those wanting premium fit-and-finish or deep button remapping.”
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Reduce wrist and arm movement by controlling cursor with thumb on trackball
protoarc.comyou don't need to drag your arm
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Adjustable grip angle up to 20° for personalized ergonomic tilt
protoarc.comadditional grip angle adjustment of up to 20 degrees
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Removable 34mm ball enables cleaning or replacement when scratched
hwp24.comthere is a hole on the bottom ... push it out
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Rechargeable battery reported (shows charge in Windows), USB‑C charging
hwp24.comWindows displays the battery charge level
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No dedicated software bundled, limiting button remapping and sensitivity tweaks
hwp24.comProtoArc EM01 does not have any bundled software
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Noticeable ball backlash in forward/backward axis affecting fine tracking
hwp24.comThe ball has a small backlash
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Plasticky build and bottom housing appears fixed, reducing perceived durability
youtube.coma little plasticky
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Buttons are louder and vary in clickiness compared with premium trackballs
youtube.comthey sound a little bit louder
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Trackball surface prone to scratches; reviewers recommend sturdier replacement balls
hwp24.comtrackball balls are easily scratched
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We recognize that this may be disappointing for anyone who favors ergonomic designs and reasonably expects them to appear in an article recommending office keyboards.
rtings.comWe recognize that this may be disappointing for anyone who favors ergonomic designs and reasonably expects them to appear in an article recommending office keyboards.