In terms of specifications, the D5600 is actually nigh-on identical to the D5500 with just a few small improvements. The biggest one, or at least, the one most worthy of mention, is the addition of SnapBridge – Nikon's innovative Bluetooth technology (more on that later).
24.3MP APS-C sensor; Articulated touchscreen LCD; Records time-lapse sequences in camera; Features Nikon SnapBridge image sharing app; Lightweight DSLR; 3.5mm mic input
Very similar to D5500; No 4K-video recording; Touchscreen cannot be disabled; Struggles to keep focus on fast erratically moving subjects