When you are in the thick of a firefight or trying to pull off a mid-combat parkour flip through a squad of foes, sometimes touchscreen control just won’t do it for you. For those intense sessions, you could benefit from a good mobile controller, and so the rather fancy developers at GameSir have unveiled the X4 Aileron.

Despite sounding like something you would expect a fighter pilot to be zipping around in, the X4 Aileron is a rather nifty-sounding Bluetooth controller that promises an ultra-responsive connection. Whilst you can get a plug-in controller for that guaranteed speed, GameSir says that their controller features low-latency play.


The X4 is a modular controller split in two, with both halves featuring a 400mAH battery, and Hall Effect sticks, complete with anti-draft performance perfect for those precision jumps. Thanks to the two halves, there is room on the back to stick on a fan for cooling or a wireless charger. That being said, the X4 also benefits from pass-through charging.

People wanting to get the most out of their gaming can enjoy E-sport level microswitch buttons, face buttons, campers, and a d-pad that have a lifespan of up to five million clicks. Of course, the key phrase as always is up to. You can also customise the controls thanks to interchangeable ABXY, thumbsticks, and d-pads.

One of the biggest things a Bluetooth controller in this style has over their pluggable brethren is their unmatched portability. The two halves fit together snuggly so you only need to cart around a small cube that weighs less than one lb. You can also download the GameSir app for further customisation, including fancy light effects.

There are two downsides to note with the X4. First off, it is Android-exclusive, so that obviously cuts the market a bit. Second of all, it costs $99.99, which isn’t a lot for a good controller, but it is in general. If you have spare cash and want a new controller, then you can check out the X4 Aileron on the GameSir website.

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