The Microsoft Lumia 435 has 2 models and variants. Generally the variants are the same device models with some different features and specifications, as the amount of internal storage, processor or just 3G/4G frequencies that may be different depending on the country where the Microsoft Lumia 435 is sold.
Compare the 2 Microsoft Lumia 435 models and know what are the specifications that differ one from another version in the full datasheet.
See here on the PhoneMore all Microsoft Lumia 435 versions.