Demo:
http://www.themeploid.com/opencart/ramos-shop.html

or
http://themeploid.com/ramos-shop

Responsive Design
Clean Design & Code
Multi Product Preview
Cloud Zoom Powered
Rollover Image Change
Specials Product Markings
Cross Browser Compatible
Easy to Install and Customize
Installation Documents
Google Web Fonts
Up To Page Button
Ready for Mobile Devices
7/24 Support
Free Installation

...
For Opencart 1.5.4.X ,new 1.5.5.X and 1.5.6, 1.5.6.1, 1.5.6.2, 1.5.6.3 AND 1.5.6.4