EM stands for Ergonomic Mouse – the series name for all ProtoArc ergonomic mice. Each model is designed to reduce wrist and hand strain.

For general wrist pain, vertical models like EM05 NL and EM11 NL keep the wrist in a handshake position. For severe pain, trackball models (EM01 NL, EM03 NL) eliminate wrist movement entirely.

Yes. All EM Series mice support Bluetooth and 2.4G wireless. They have built‑in rechargeable batteries with USB‑C charging. No disposable batteries needed.

Most EM mice offer adjustable DPI levels – typically 3 to 5 settings ranging from low (800) to high (8000). Use lower DPI for precise design work, higher DPI for fast cursor movement on large screens.

Yes. Connect via Bluetooth to Windows, macOS, iOS, iPadOS, and Android. Pair up to three devices and switch with one button.

Vertical mice are best if you want a more natural wrist angle while still moving the mouse. Trackball mice are ideal if desk space is limited or if you want to keep your hand completely still.

Battery life varies by model, but most provide weeks to months of typical use per charge. The mice automatically enter sleep mode when idle to conserve power.