Thanks for your question. The monitoring data of the past two years will be stored on the APP. ""Day"" in the graph will display the average value of the data monitored by the detector every hour in the last 24 hours. ""Month"" in the graph will display the average value of the data monitored by the detector every day in the past 30 days. ""Year"" in the graph will show the average value of the data monitored by the detector in each month in the past two years. You can also export the data you need directly through the APP. 

No, you need to install the magnetic adapter first; 

Works great. The filter is screwed on and the lens cap can be clamped directly to the front of the filter, as you do directly on the lens. Everything very precisely fitting and of high quality. 

From my opinion the answer is no ! mine it’s a 82 mm and there no way to hook a Lens cap on it 

It depends on the lens. This filter just screwed into the ring surrounding my Nikkor 18-33mm lens. I also have an Olympus TG-6 and had to buy an adapter ring to use with the filter.