The Galaxy S5 mini will still have the fingerprint scanner, heart-rate monitor and waterproofing of its bigger brother, but its quad-core processor will run slower and its screen will, of course, be smaller. Samsung Electronics unveiled the S5 mini on Tuesday. It has the same looks as the S5, including its dimpled back cover but its processor is clocked at only 1.4 GHz instead of 2.5GHz, and its 4.5-inch screen has a resolution of 720 by 1280 pixels, down from the S5's 5.1-inch, 1920 by 1080 pixel display.