All the same, it is better to make a replaceable battery, because. an external battery lasts 2-3 times longer depending on the capacity (again, I rely on the model from Razer Basilisk X HyperSpeed, it is well thought out there, as well as battery replacement). And the backlight profile could be done through the top buttons as it is implemented on the HyperX Pulsefire Surge model, and not to make a separate button for this from the bottom. Without backlight, it lasted 10 days until the battery flashed red all day at the computer, plus I play CS:GO.
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