XM2w 4k Gaming Mouse
  The XM2w 4k Wireless Gaming Mouse is our long awaited high-end wireless
  version of the XM series. While maintaining the same ergonomic shape, we've
  integrated numerous internal enhancements for reduced weight and increased
  consistency. Equipped with the flawless PixArt PAW3395 sensor, a Nordic MCU,
  and a high polling rate dongle, this mouse delivers outstanding performance at
  up to 4000Hz wireless. Experience super crisp and satisfying clicks with our
  custom-made and pre-sorted Kailh GX SPDT switches. The updated Hybrid skate
  design offers two redesigned shapes for customizable glide.
Built for Competitive Play
  While the outer shape remained identical to the famous XM claw grip shape, the
  inside was re-designed to achieve a lower overall weight of ~62g while
  maintining a robust shell design without holes. The XM2w 4k has been developed
  by esports veterans for use in competitive play, with top-of-the-line
  components including PixArt's PAW3395 sensor, the Nordic nRF52840 wireless
  MCU, and Endgame Gear's exclusive Kailh GX SPDT switches with GX Mode
  compatibility.
Wireless Polling Rate of up to 4000Hz
  To achieve the best performance possible, XM2w 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.
Industry-Leading Click Latency
  Our XM2w 4k sets a new standard for wireless performance with click latency
  measuring an average below 310 microseconds*. With a constant 4000 Hz polling
  rate for the clicks, you’ll experience ultra-low click latency, no matter
  which sensor polling rate you choose. This exceptional responsiveness ensures
  your every click is registered instantly, giving you a competitive edge and
  winning you the deciding duels.
*10.000 clicks on XLAT v.1.4.0
PixArt 3395 Sensor
  The XM2w 4k's responsiveness significantly improves by implementing the PixArt
  PAW3395 featuring a higher resolution pixel array and up to 26000 CPI,
  Lift-Off-Distance as low as 1mm, and up to 650 IPS for best accuracy during
  the fastest of swipes. The PAW3395 also offers sensor-level MotionSync for
  consistent and synced reports. With all smoothing and angle-snapping disabled,
  the tracking data from the sensor is as raw as it can be. Power-saving
  features are completely disabled (corded mode) squeezing every last bit of
  performance out of the XM2w 4k.
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.
Hybrid Skate Design
  The XM2w 4k comes with two sets of PTFE skates (large & small) and a sensor
  skate. Thanks to a hybrid design bottom shell, it's possible to easily install
  either large or small skates with the smaller skates fitted by default. The
  larger area offers added flexibility when customizing the XM2w 4k's glide and
  re-using already purchased skates. The sensor skate is optional but
  recommended on softer surfaces.
(Almost) No Power-Saving
  Engineered for peak performance the moment you plug it in, XM2w 4k ensures
  every click and movement is delivered with precision and speed. While the
  focus is on performance, we’ve also integrated customizable power settings for
  those who want to extend their battery life. Fine-tune your experience with
  adjustable sensor power-saving options and customizable deep sleep timers,
  giving you more control without sacrificing performance.