The extension allows to specify option combinations as product variants and specify properties for them like quantity, image, weight.

Main Features:
======================
- ability to specify model, image, quantity, weight for each variant;
- ability to specify discounts, special prices for variants;
- variant options and regular options can be combined in one product;

You can see how the extension works in this video. Please notice this video was created on Opencart 2, but the functionality is the same.
https://www.youtube.com/watch?v=P9SMy_eVhTE

Demo Store
======================
http://demo3012.ka-station.com/admin/
login: demo
password: demo

Demo product

Release Notes:
======================
- User interface is in English language only.
- the patch is fully compatible with the default theme only. If you would like to install it to a custom theme, a code adaptation might be required;

Related Extensions
======================
The variant options can be shown as images when this extension works together with the 'Product Option Images' extension. Checkout out how the variant selection looks when these both modules are installed.
http://demo3012.ka-station.com/index.php?route=product/product&path=59_67&product_id=59

A detailed page of the 'Product Option Images' extension is available here:
https://www.opencart.com/index.php?route=marketplace/extension/info&extension_id=37538

The variants can imported from a CSV file with our 'CSV Product Import' extension:
https://www.opencart.com/index.php?route=marketplace/extension/info&extension_id=31428

The variants can exported to a CSV file with our 'CSV Product Export' extension:
https://www.opencart.com/index.php?route=marketplace/extension/info&extension_id=31849

Feel free to submit any questions in comments, We will reply to all of them here or directly by email.