ProtoArc

EM01 NL

The ProtoArc EM01 NL is a quiet, affordable thumb trackball with adjustable tilt and multi-device support, but lacks dongle storage and has durability concerns.

Summed up from 8 published reviews

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What reviewers like

Quiet, responsive clicks 1 2 7 8
Adjustable 0–20° tilt for ergonomics 1 2 3 4
Multi-device switching via dongle and Bluetooth 1 2 3 5
Long battery life up to 90+ days 1 3 6 8
Strong value at half MX Ergo price 1 2 5 6

What they don't

No onboard storage for USB dongle 1 5 6 8
Build feels cheap; plastic not premium 2 5 6
Left-click may fail after extended use 2 6 7
Fixed DPI steps; no customization software 2 6 8

Best for

Quiet office work, multi-device users, ergonomic seekers

Skip it if

Need dongle storage, gaming precision, premium build

Where it fits

hand: Right
use: Wrist relief
buttons: Two
connection: Wireless

Specs

Type: Trackball
Hand: Right hand
Side buttons: Standard
Wireless: Yes
Size: Medium

Also worth a look

Questions

Is the ProtoArc EM01 NL worth it?

The ProtoArc EM01 NL is a quiet, affordable thumb trackball with adjustable tilt and multi-device support, but lacks dongle storage and has durability concerns.

What do reviewers like about the ProtoArc EM01 NL?

Quiet, responsive clicks. Adjustable 0–20° tilt for ergonomics. Multi-device switching via dongle and Bluetooth. Long battery life up to 90+ days. Strong value at half MX Ergo price.

What are the downsides of the ProtoArc EM01 NL?

No onboard storage for USB dongle. Build feels cheap; plastic not premium. Left-click may fail after extended use. Fixed DPI steps; no customization software.

Who should buy the ProtoArc EM01 NL?

Quiet office work, multi-device users, ergonomic seekers. Skip it if need dongle storage, gaming precision, premium build.

Sources

We don't test products ourselves. This page sums up 8 published reviews, read on October 24, 2026; each point above links to the reviews that make it.