ThemeForest - PROCount: Countdown Landing Page - RIP | 291 KB
PROCount is a simple, clean and fully responsive mobile friendly landing page.
The theme is very minimalistic and lightweight. It contains a customizable Countdown Clock and MailChimp plugins. Template also comes with a LESS Stylesheet file that you can use to customize the page however you would like.
DEMO:
http://themeforest.net/item/procount-countdown-landing-page/4754546