Sony's latest camera sensor features on-board memory making it the first of its kind. This sensor will debut on the Sony Xperia XZs and a little later on the Sony Xperia XZ Premium. Memory makes the sensor versatile and allows it to be used for many things, but we think the most fun feature is the 960fps slow motion. Video is recorded at 720p resolution and at any point you can switch from real time to Matrix-like slow motion. The memory is enough for only a blink of an eye (0.18s), but a lot can happen in that tiny window when time slows to a crawl. Current phones top out at 240fps,...
Source: http://www.gsmarena.com/check_out_our_sony_xperia_xz_premium_and_xzs_960fps_slowmo_videos-news-23640.php