In a bizarre turn of circumstances, someone was accidentally shipped Logitech's yet-unreleased Logitech Pro Superstrike X3 gaming mouse after initially buying a Pro X2 Superstrike and a G325 headset. Spotted by TechPowerUp, Alternative-Cream444 on Reddit posted their story and images of the mouse on the MouseReview subreddit, including images of the mouse's retail packaging.
Images of the mice confirm that the clamshell has received no identifiable changes compared to the outgoing X2 Superstrike. The right and left click mouse buttons share the same black color scheme as the existing model, and the retail packaging confirms the mouse comes with Logitech's outgoing Hero 2 sensor with 8000Hz polling.
The specs change around battery life, speed, acceleration, and weight. The X3 Superstrike's retail packaging confirms that the X3 Superstrike weighs 59 grams, 2 grams less than the X2 Superstrike, features 2% greater acceleration in Gs (90Gs vs 88Gs), and 5% higher acceleration (930 IPS vs 888 IPS). Battery life on the X3 Superstrike also improved massively, jumping from 90 hrs on the X2 to 135 hrs (a 50% improvement).
There are probably several other changes under the hood that the packaging material does not specify, but these are the changes that we know of for sure. Alternative-Cream444 holds the title as the world's first confirmed owner of an X3 Superstrike mouse. The X3 Superstrike also came directly from Logitech's own online store, so a third-party provider is not to blame for the shipping mishap.
We'll have to wait and see if Logitech improved on all of the features that rumors have suggested the company would be implementing into the X2 Superstrike's successor. Months after the X2's initial release, rumors began to pop up on social media suggesting Logitech was already working on a future iteration of the mouse featuring updates to the main controller and tweaks to HITS.

Frequently Asked Questions
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How do the X3 Superstrike's 59g weight, 90Gs acceleration, and 930 IPS speed compare with the X2 Superstrike in practical use?
Does the X3 Superstrike keep the same Hero 2 sensor and 8000Hz polling as the X2 Superstrike?
What changes, if any, are known for the X3 Superstrike's main controller or HITS system?
Can the X3 Superstrike still use the same variable actuation settings as the X2 Superstrike's magnetic switch system?
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The G Pro X2 Superstrike is one of Logitech's most advanced mice it sells currently, featuring magnetic coils for the right and left mouse buttons to introduce variable actuation points that can be adjusted across 10 different steps. This helps reduce as much input latency as possible from the time you initiate a mouse click to the time it registers on screen.








