Shopping note: Product details and price were checked on September 22, 2026. We may earn a commission if you buy through the retailer link below.
Best-fit reader
Shortlist the EM11 NL if your hand is under the manufacturer's stated 7.5-inch guideline, you want a right-handed vertical shape, and you regularly move between as many as three devices. Skip it for a left hand, a larger hand, wired use or advanced button customization.
The decision in five facts
| Shape | 58-degree vertical design; fit remains personal |
|---|---|
| Hand-size position | Small to medium hands under 7.5 inches, according to ProtoArc |
| Connections | Two Bluetooth channels plus one 2.4G USB-A receiver |
| Sensitivity | 1000, 1600 and 2400 DPI |
| Power | Built-in 500mAh rechargeable battery with USB-C charging |
What looks useful
Reasons to shortlist
- Three-device switching suits mixed laptop and tablet desks.
- Quiet main buttons can be useful in shared spaces.
- Rechargeable power avoids disposable AA replacement.
- The manufacturer publishes dimensions and a hand-size position.
Reasons to skip
- The sculpted right-handed body excludes left-handed use.
- Larger hands may need the EM11 Pro or another full-size option.
- Side-button behavior can vary by operating system and app.
- A vertical angle cannot guarantee comfort or resolve pain.
Fit matters more than the word “ergonomic”
ProtoArc lists the mouse at approximately 138 × 69.2 × 68.1 mm and 112 g. Those numbers help narrow the shortlist, but they cannot predict how the thumb shelf, palm support or button reach will feel to a particular person.
Measure from the wrist crease to the tip of the middle finger and compare that result with the manufacturer's hand-size guidance. A return option matters more than a generic promise of better posture.
Connectivity and daily workflow
The two Bluetooth channels and 2.4G receiver let one mouse serve three devices. That is useful for a work laptop, personal computer and tablet, provided each device supports the required connection. The USB-C cable charges the mouse; it should not be assumed to provide wired pointer data.
EM11 NL or EM11 Pro?
The NL is positioned for smaller hands and a simpler office workflow. The newer EM11 Pro targets medium-to-large hands, raises the DPI ceiling, adds browser-based customization and includes a horizontal side wheel. Those extra controls matter for spreadsheets and timelines, but they are unnecessary for a buyer who only needs pointing, scrolling and device switching.
ProtoArc EM11 NL
Right-handed rechargeable vertical mouse with three-device switching.
Need to verify fit first?
Compare your hand size with the manufacturer's guidance before opening the retailer listing.
Sources
- ProtoArc EM11 NL product specifications
- ProtoArc EM11 Pro specifications
- PartnerBoost product snapshot reviewed September 21, 2026.