Borescope Info ?

That wifi one is sweet! The weak link in mine is its pretty rigid and super long (3 meters) and the USB to the phone makes a semi rigid connection so you have to sort of bend the USB or crane your neck to see the phone while your trying to support the 8 feet your not using and keeping the USB in the phone and guiding the probe into the spark plug hole. The Snap on is probably pretty old and uses a .3M 240x240 pixel resolution camera or something, not the 1080p even a weak phone can display or interlace nowadays. Ill have to coil up mine again and just make it a rigid 12". Mine has a variable light on the tip and a few attachments including a mirror that lets you see at a 90 degree angle. No idea why you'd need that? Wifi is next for me as all the phones are going USB-C now, just another link in that fragile chain now....