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The OP1w 4k is built for competitive gaming, combining a 4000Hz wireless polling rate, PixArt PAW3395 sensor, and exclusive Kailh GX SPDT switches for exceptional speed, precision, and click feel. Swappable main button switches let you tailor the experience to your preference, while the lightweight OP1 shape keeps you in control when every millisecond matters.

OP1w 4k - Where performance meets perfection
The OP1 4k is built for competitive gaming, delivering an ultra-responsive 4000Hz polling rate with exceptionally low click and motion latency. Equipped with the PixArt PAW3395 sensor for pixel-perfect tracking and our exclusive Kailh GX SPDT switches with GX Mode compatibility, it combines precision, speed, and crisp, satisfying clicks. Like all OP1 series models, the OP1 4k features swappable main button switches, allowing you to customize click feel and performance to your preference.

Wireless Polling Rate of up to 4000Hz
To achieve the best performance possible, OP1w 4k is powered by the Nordic nRF52840 wireless MCU. The 4k dongle utilizes a Nordic nRF52820 to guarantee stable and reliable wireless data transmissions. Additionally, a Nuvoton M483 MCU is used for the high-speed USB connection, enabling high wireless polling rates of up to 4000Hz for incredibly low sensor and click latency. The 4k dongle is included with the mouse for ideal performance straight out of the box.

PixArt PAW3395 Sensor
Achieve unmatched accuracy and lightning-fast tracking with the game-changing PixArt PAW3395 Sensor. With an impressive range of up to 26,000 CPI, 650 IPS, and 50G, this sensor ensures that every movement you make is precise and impactful. Navigate through virtual worlds with unparalleled precision, effortlessly immersing yourself in the gaming action. But that's not all. Take your gaming performance to the next level with the sensor's Motion-Sync feature. By enabling Motion-Sync, which boasts polling rates of up to 4,000Hz, you can enjoy consistent data intervals, further perfecting your muscle memory and optimizing your competitive gameplay.

Kailh GX Switches developed by Endgame Gear
Designed for lightning-fast precision at all polling rates, the mechanical Kailh GX switches guarantee you won't miss a crucial click. Their SPDT configuration ensures optimal electrical contact and unmatched reliability. Featuring both top and bottom contacts, Kailh GX Switches excel whether you prefer low click latency in GX Speed Mode or security in GX Safe Mode. What sets them apart is their crisp, defined click sensation, offering tactile feedback for enhanced gaming control. Precise actuation and a balanced design ensure flawless, spam-friendly rapid-fire actions.

Industry-Leading Latency
The OP1w 4k delivers exceptional wireless responsiveness with ultra-low click and motion latency. A stable 4000Hz polling rate ensures fast, consistent input registration across all settings, while GX Speed Mode further reduces click latency for maximum competitive performance.
* Tested with 10,000 clicks on XLAT v.1.4.0
** Tested with 10,000 motion data points on XLAT v.1.4.0

Redesigned Shape for Versatile Claw Grip
The OP1w 4k gaming mouse offers unparalleled comfort during those intense gaming sessions, allowing you to focus on your performance. Drawing inspiration from the popular XM shape, the OP1w 4k takes it up a notch while keeping an emphasis on claw grips. Its flatter sides provide ultimate flexibility for finger placement, making it an excellent fit even for gamers with larger hands. The extended side walls prevent accidental clicks, allowing you to rest your fingers on the edge without any interruptions. This subtle yet significant design change offers additional comfort and control, catering to gamers with various hand sizes and grip styles.

Swappable Main Button Switches with Optional Switch Packs
What makes a mouse click great? Ask this question to 10 people and get 11 different answers. Everyone has their own preferences and sometimes we just want to use what nobody else is using. While the Kailh GX is a switch with a very good combination of short internal travel, crisp actuation point and spammability, you may still want to try your favourite switch. All OP1 mice have a swappable main button switch design with accessible screws at the bottom plate. This allows for effortless customization, giving you the perfect click feel tailored to your liking. Choose from a variety of switch packs offering different click sensations, and follow our simple step-by-step guide to replace the switches. With the universal switch pack, you can use any mechanical switch you can find, solder-free.

Prioritizing Performance
We've engineered our wireless technology to prioritize performance over anything else. By running the sensor in permanent Corded Mode and minimal power-saving on the Nordic 58240 MCU, we ensure unrivaled responsiveness for your gaming experience. To balance the demands of high performance and extended battery life, the sensor switches to power-saving mode after 1 minute of inactivity, transitioning into Deep Sleep mode after 3 minutes. Users can easily customize these settings to tailor their gaming preferences and also disabling Power Saving and Deep Sleep altogether. With the default settings, the OP1w 4k delivers approximately 30 hours of battery life at a 4000Hz polling rate, empowering gamers with uninterrupted playtime at peak performance.
Technical Specifications
Pixart PAW3395
up to 26000 CPI (steps of 50 CPI; pre-defined: 400, 800 (default), 1600, 3200)
1000, 2000, 4000 and 8000 Hz (8000Hz by default)
~50.5g
650 IPS
50 G
Kailh GX Mechanical switches
80 Million Actuations
wired (USB 2.0 Type A)
~118.2 x 60.5 x 37.2mm (L x W x H)
1mm (2mm via software)
NUVOTON M483
digital (adjustable via software)
5 + 1 (2x top, 2x side, 1x mouse wheel, 1x CPI on bottom)
TTC silver (wide)
2-way
pre-sorted Kailh GM 2.0 switches (20 million actuations)
pre-sorted Kailh GM 2.0 switches (20 million actuations)
Plastic (Chassis), PTFE (Glides), Dry Grip Coating (Surface)
Hybrid Skate Design (small skates pre-installed, big skates included in the box)
Black Flex Cord 5.0 (180cm, USB 2.0)

