look what i did this time ! , not only did i cram my old Gteng Fpv watch inside my flysky fs-i6s i also fit 2 go pro hero 4 batteries in Parallel to power it at 4.35v making it a total of 2,300mah separately from the transmitter , I also power the flysky transmitter Separately with a huge 2s 3,000mah lipo ! . check out that Tripple feed patch antenna for the best of both worlds . aside from the obvious lets talk about the hidden easter eggs it has , not only can you charge the internal gopro batteries via original usb port at the bottom you can also feed the video rx signal out to any dvr or monitor via the 4 pin sim port next to it ! & thoes useless buttons on the back of the transmitter now power on /off the gteng watch & switches the frequency , just take a look at the pics for more insight . what you see in the radio is where the magic really is, you can see how i had to solder an ipex connector to the gteng receiver board so i can use an mmcx to ipex for my tripple feed antena & how i had to fit the reciever board snug under &between the gimbals now that was a miracle it fit so good and left just enough clearance for the gimbals to not touch the fpv screen . its a very lenghty process that took me weeks not only that i broke the first white flysky transmitter touch screen rendering it completely useless ( not entirely i did use the grey rubber hand grips from it ) and i broke fpv watch screen ribbon Cable so really it cost me an additional $120 but i knew it would work in the end , it was way over budget but it works flawless now ! just wish it wasent a flysky protocol i can go more in detail for thoes who want to know but this is all im going to say about the build process to keep this post short . i will have a youtubelink soon as i have a new build to test it with.