(Image credit: Nothing / Aidan Zamiri) Nothing has established itself as a very dark, mysterious and playful tech brand since entering the scene in 2021, which is why the newly announced partnership with global superstar, Charli XCX, makes perfect sense. The singer-songwriter stars in a new Nothing campaign promoting the Headphone (a), while showcasing the impressive 135-hour battery life of the wearable over 5 days of continuous use. We recently reviewed the Nothing Headphone (a), and described the battery life as 'absurd' (in a good way). A short clip announcing the collab was shot by photographer Aidan Zamiri and shows Charli XCX in her element while a white room gets painted black around her. She holds what looks to be the Nothing Phone (4a) Pro , with XCX displayed in LED strips on the Glyph interface, for that extra special detail. Nothing also just posted a behind-the-scenes video to YouTube of the filming process with Charli XCX that was shot using the Nothing phone (3).…