The most striking difference in this group is physical size. The Insta360 Go Ultra is an ultra-compact camera at just 52.9 g and 38.47 cm³ in volume, making it one of the smallest action cameras available — designed to be clipped, mounted, or worn with almost no presence. The Insta360 X5, by contrast, weighs 200 g and occupies 218.77 cm³, a form factor roughly 5.7× bulkier. For users who prioritize discretion, wearability, or ultra-light setups, the Go Ultra has an overwhelming physical advantage.
On water resistance, both cameras share the same -20 °C cold-weather floor and both carry external memory slots and gyroscopes for stabilization — but their waterproofing credentials diverge meaningfully. The Go Ultra is rated IPX8 with a depth limit of 10 m, while the X5 holds a full IP68 certification and is rated to 15 m. The IP68 rating on the X5 also formally covers dust ingress, which IPX8 does not explicitly address. For serious underwater or harsh-environment shooting, the X5 edges ahead on protection.
For the touchscreen interface, the X5 includes one while the Go Ultra does not — a real usability difference when adjusting settings on the fly without a companion app. Both cameras have a display, but neither features a secondary screen. Overall, the Go Ultra wins decisively on portability and wearability, while the X5 holds the edge on water resistance depth, dust protection, and onboard controls — making the right choice heavily dependent on the intended shooting context.