Jolla is a Finnish mobile company whose Sailfish OS phones used their own set of system alerts rather than the standard tones found on larger platforms. This critical low battery warning is one of those device-specific sounds, collected and shared online alongside other phone charging and battery alerts. Because few people owned a Jolla handset, the tone sounds unfamiliar to most listeners, which has helped it travel beyond its original phones and into short videos, memes and edits where an instantly recognisable dying-device warning is needed.