How to Measure Your Pupillary Distance

How to Turn on Your NSA Original and Adjust Brightness

How to Turn on Your NSA 2.0 and Adjust Brightness

How to Turn on Your ADL

How to Select Your Specific Attachment

How to Attach the Universal Clip

How to Attach the Wedge Attachment

How to Attach the Screw-Retained Attachment

Our Micro Flip-Up Loupes & NSA Advantages

How to Attach the Battery onto the NSA 2.0

How to Charge the NSA 2.0

How to Charge the NSA Original

How to Charge ADL