Delux is lining up significant upgrades for its top-of-the-line M800PRO model, which is a not too subtle clone of Razer's Viper series of symmetrical-shaped gaming mice. Enthusiasts have placed the M800's chassis as an intermediate between the full-sized Viper and Viper Mini, so it could be considered as a medium-sized equivalent. In order to match the competition in terms of specifications and features, Delux has sought to upgrade the M800PRO's internal hardware and has also made changes to its externals.

Pixart's PAW3395 has been selected as the new optical sensor, which is a significant generational upgrade over the previous M800PRO iteration's PAW3370. Delux has not confirmed, within its specifications list, whether MotionSync will be enabled by default. The upgraded sensor is capable of running this feature, and the vast majority of gaming mouse manufacturers have chosen to enable it. The PAW3395 is rated for a 26,000 maximum DPI, 650 IPS speed, 50 g acceleration and 1000 Hz polling rate. The lift off distance (LOD) is adjustable between heights of 1 and 2 mm.The primary mouse buttons are now fitted with Huano Blue Shell Pink Dot switches, these are rated for an 80 million click lifecycle. The click feel is said to be "crisp and stable". Delux chose to fit the older M800PRO with Kailh GM 8.0 switches, which mirrored a lot of the competition at the time, but users have complained about how heavy and fatiguing the premium Kailh clickers feel during long gaming sessions. The shift to Huano's flagship switch is an interesting move, and should satisfy enthusiasts seeking an alternative click feel.

Delux has applied a new UV matte coating onto the mouse's shell, which it claims will improve grip and comfort for gamers, via a soft touch feel. An expanded accessory pack is included in the package, with a set of replacement glass feet looking to be a very generous addition. Third party sellers often sell these extra glides at a premium price. The rest of the supplied pieces include a wireless USB extension adapter, a set of rounded edge PTFE glides, grip tape and a paracord-type USB-A to Type-C charging cable.The Delux M800PRO 3395 model is available to pre-order for $60 at the Delux International AliExpress Store. Shipments to buyers are expected to begin on April 15. Black and white colorways are confirmed for day one release, and the pink shell version will be available at a later date.