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if you are interested in International Dahua cameras, a forum member sells dahua (and some Hikvision) and ships world wide. You can read some of the members recommendations on his service. He also provides cameras to other forum member for evaluation and reviews.
You can email him for a quote, or purchase from his Aliexpress store or his Amazon store. The cameras are fully upgradable, he posts upgrade software when available.
I have the turret version of this cam T2431T-AS-S2. It is fine with plenty of light or on IR. But if you want color at night you better have a lot of light. Also, the version (bullet) that you are asking about does not have onboard audio.
The cam that @SouthernYankee recommended above is tops right now for low light color performance.
If want the sharpest version just use the IPC-T5442TM-AS or IPC-T5442T-ZE
based on your budget, if have plenty of light in the night, the T2431T-AS is the best to go!