The NZ Electrical Code of Practice published by Work Safe NZ (NZ Govt) has regulations covering the light fittings that can be installed in bathrooms. Follow this link for a simple breakdown of the requirements
All of these lights are suitable for Zone 3 - more than 600mm from shower door or bath. Less than this distance the light is required to be splashproof, and rated IP44. These lights have IP44 in the title.