No, you just connect your phone to the microscope and the microscope has its own wifi. 

No, there is no tracking app for that. Just connect it to the Bluetooth configuration. 

new technology i guess, cnc Trapezoidal thread forms are screw thread profiles with trapezoidal outlines which helps more friction when screwing. Very easy to install. 

Due to the use of a polarising film to control the amount of incoming light, colour cast is a common phenomenon on all commercially available adjustable ND's. KF has minimised the effect of the polarising film on the colour cast by using a mature manufacturing process and perfecting its coating technology. *According to laboratory data, the ND2-400 has a bias value of around 290k, which is below the industry average of 500k. Does the ND2-400 have dark corners? Tested with Nikon Z 7 and Nikor 14-30mm Sline, dark corners are not noticeable at 14mm, no dark corners at 16mm. 

Regret for this inconvenience caused, we just checked your Rode SC4, it could be used on our microphone, would you mind contact us and send us a video of your operation, we will check what's wrong with it, please do not worry about it, we are here to solve this issue with you.