Endgame Gear OP1w 4k Wireless Gaming Mouse review

The OP1w 4k is a small wireless gaming mouse from Endgame Gear. It weighs 58.5 g and connects by 2.4 GHz receiver or wired USB. The "4k" refers to 4000 Hz polling, and the quoted battery figure is also given at that rate. It is built for players who want a compact body and a high polling rate, and who accept a short list of extras.

The body is symmetrical and measures about 118 × 61 × 37 mm. It has a moderate rear hump that suits claw grip. It is right-handed, and the spec sheet lists no left-handed or alternative-size version.

Owner reports on shape are mixed. They say it works for claw grip but not for large hands. With those dimensions and that hump, it makes most sense for small to medium hands that already claw the mouse.

Weight gets mixed comments too. One reviewer calls it heavier than newer small mice. Another calls it lightweight. At 58.5 g, the figure itself is clear, so how it reads depends on what you are comparing it with.

The V1 is listed with a PixArt PAW3395 sensor. The V2 page lists a PAW3950 instead, so check which version you are buying. Polling goes up to 4000 Hz, which is the point of the 4k name.

The default maximum DPI is 3200, and you change it in software. That is a plain starting point rather than a headline figure, and the spec sheet gives no other DPI numbers.

Connection options are the 2.4 GHz receiver and wired USB. Bluetooth is not listed among the verified connections, so treat this as a receiver-and-cable mouse.

Battery is the main complaint from owners, who call it short for the class. The quoted figure is up to 30 hours at 4000 Hz polling with default power saving. That power saving drops the mouse into a low-power mode after 1 minute idle, then deep sleep after 3 minutes. If you run 4000 Hz all day, expect to charge often. The wired USB option is there for those moments.

Build quality draws praise from owners, as do the switches and the scroll encoder. The V2 uses Kailh GX main switches, and they are hot-swappable. That suits people who like to change switches over time.

The button count is listed as five in the PC Gamer review and four in the V2 spec table. Either way, a scroll wheel is present and the layout is short on extras. With a small symmetrical body and that few buttons, it reads as a mouse built around clicking and aiming rather than macros.

Firmware updates are supported. Owners describe the software as dated. Since DPI adjustment happens there, you will meet it at least once.

This is a mouse for claw-grip players with smaller hands who value a sturdy body, good switches and 4000 Hz polling. The battery figure at that polling rate and the dated software are the trade-offs. If either one matters more to you than the build, look at other options.