mega.nz/#F!1BwCHAwQ!iAVMSKa9CcYPyjVNPvwBnQ
(Link valid as long as I keep the account...)
Four shots inside the stock Devo 12S radio for those who may be interested.
The round thing near the bottom is the clock battery.
Walkera calls the fittings on the shoulders of the tx that contain a bunch of switches "Switch Caps".