BG401317353 You can monitor for as long as the battery will last. The smartphone app Oximeter-H will graph the results, which you can save and analyze later. If you choose the History option, you can see an average for all four measurements, and even scroll through the graphs to see exact values.

BG401317353 No, it does not have NFC.

BG401317353 That's an interesting question. In the past, it would be the EU version because the EU has specific requirements. But after Brexit, the UK is no longer a part of the EU. You'll have to check with your mobile service provider to see if they still use the EU requirements.

BG401317353 Yes, you can see an average for all 4 measurements (O₂, Heart Rate, Perfusion Index, HRV) in the smartphone app, Oximeter-H. You can even save the session, and scroll through the data points to see the exact values.

BG401317353 Yes, as you can see from the title, the brand is Boxym.

BG401317353 It is completely safe, just like sunlight and old style CRT TVs are safe. The UV wavelength used here is just a component of ordinary light.

BG401317353 LS-P can calculate area, angles, volume, etc. See this chart H745a7cca3ac64fb5b6d1cd3527d3a430x.jpg

BG401317353 H745a7cca3ac64fb5b6d1cd3527d3a430x.jpg

BG401317353 Sort of. Negative ion generators filter the air by attaching the ions to dust particles. the dust will then be attracted to surfaces like the wall, and will no longer be in the air. If you use the ion function, you'll soon see the wall and other nearby surfaces turn black from the dust. You might want to put a piece of cloth behind the unit to collect the dust. Models specifically made to filter the air are known as electrostatic filters. In addition too generating negative ions, they'll also have a positive attracting plate for the ionized dust to adhere to. You have to take out the positive plate and wash periodically.