Established in 2018, Marsback specializes in gaming peripherals. Almost exactly a year ago, the original Zephyr Gaming Mouse debuted with a built-in fan. While quite effective in cooling the palm, the implementation no doubt left room for improvement when it came to noise levels, vibration, and expected lifespan. The Zephyr Pro aims to improve on this with a fan that runs just as cool, but much quieter. Furthermore, the Zephyr Pro comes with an entirely different shape, which is best described as a Glorious Model O with the hump of a Logitech G Pro Wireless. Unlike the original Zephyr, the Zephyr Pro also has full software support through which the once again rich RGB lighting can be configured to one's liking. PixArt's PMW3389 capable of 16,000 is still the sensor, and Omron switches rated for 50 million clicks are used for the main buttons. The Zephyr Pro comes with a flexible, paracord-like cable and regular black-dyed PTFE feet. Without any discounts, the Zephyr Pro is priced at $99.99, but sold for as low as $59.99 depending on the currently active discount. Aside from the black colorway which this review is based on, a white variant is also available.