To provide the best performance, the OP1w 4k has a powerful wireless Nordic nRF52840 MCU. The included 4k dongle also uses a Nordic nRF52820 MCU, ensuring stable and reliable wireless data transmission.

An additional Nuvoton M483 MCU is used for the high-speed USB connection, resulting in wireless sampling rates of up to 4,000 Hz, offering extremely low sensor and click latency.

And the best: The 4k dongle is included with the mouse, so you can enjoy full performance right after purchase.

Next-generation Kailh GX switches

Endgame Gear's Kailh GX switches ensure you'll never miss a click, no matter the polling rate. Their SPDT configuration provides optimal electrical contact and unmatched reliability. The switches feature contacts on both the top and bottom, allowing you to choose between the ultra-fast GX Speed mode or the secure GX Safe mode.

Industry-leading latency – Your competitive advantage in gaming

The OP1w 4k sets the standard for wireless performance, achieving an average click latency of less than 310 microseconds. With a constant 4,000 Hz click sampling rate, you get low latency regardless of the sensor sampling rate selected. In GX Speed mode, click latency can be reduced by an additional 1 ms.

This responsiveness ensures that every click is registered instantly – ideal for those critical moments where milliseconds can decide the outcome of a game.

Additionally, motion latency has been optimized to an average of less than 400 microseconds. This means your mouse movements are executed quickly and accurately, without lag, keeping you one step ahead of your game.

Pixart PAW3395: High-tech sensor for fast gaming

The Pixart PAW3395 sensor has a resolution range of 50 to 26,000 CPI, adjustable in increments of 50 or 100 directly on the bottom of the mouse. This allows you to quickly find the ideal setting at any time.

Other specs include a 650 IPS tracking speed, selectable sampling rates of 1,000, 2,000, and 4,000 Hz, and a 2 mm liftoff distance (adjustable to 1 mm via software). These top-notch specs provide a competitive edge in esports titles.

New shape – Ideal for flexible finger grip

The OP1w 4k gaming mouse ensures complete comfort during long gaming sessions, allowing you to focus entirely on your performance. Based on the popular XM shape, the design has been further refined to give finger grip users even greater control. With flatter sides, you have maximum flexibility in finger placement, ideal for gamers with larger hands.

Slightly extended sidewalls prevent accidental clicks, allowing you to rest your fingers on the edges without triggering unwanted actions. This thoughtful design adjustment offers extra comfort and precise control, no matter the size of your hand or how you hold the mouse.

Customizable switches

What makes a perfect mouse click? It's a matter of preference. That's why the OP1 gaming mouse offers interchangeable main switches. The pre-installed Kailh GX switches offer a clean actuation point and fast response time. However, if you have a preferred switch, you can easily replace it without soldering, thanks to accessible screws on the base. Find the perfect click feel for you.

The gliding behavior is also customizable: The OP1w 4k features a clever hybrid mousefeet design. By default, a small set of mousefeet provides balanced gliding properties. For softer mousepads or maximum gliding, we include a larger set of mousefeet and a sensor mousefeet. Best of all, you can change the switches without removing the skates – for a seamless adjustment to your preferences.