Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | DJI - Osmo Action 3 | Insta360 - X4 |
|---|---|---|
| Max 4K fps | 120 | 60 |
| Waterproof depth | 16 m | 10 m |
| Max video | 4K120 | 8K |
| Stabilization | advanced | gimbal-class |
Between the Osmo Action 3 and X4, the Osmo Action 3 comes out ahead in max 4k fps / waterproof depth, while the X4 wins on max video / stabilization. Overall, the Osmo Action 3 scores 76.5 and the X4 scores 76.4 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (76.5 vs 76.4). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Osmo Action 3 if you care most about max 4k fps / waterproof depth. The biggest gaps in its favor are max 4k fps, waterproof depth. The single most decisive one: Max 4K fps — 100.00% more. 120 vs 60.
Pick the X4 if you care most about max video / stabilization. Its strongest claims are max video, stabilization. The single most decisive one: Max video: 8K (vs 4K120).
Both ship with comparable horizon lock, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: DJI - Osmo Action 3 or Insta360 - X4?
DJI - Osmo Action 3 leads the current Mars Score by 0.1 points.The more useful decision is the trade-off behind that result: compare max video, max 4k fps, waterproof depth against the way you will actually use the product.
Choose DJI - Osmo Action 3 if…
DJI - Osmo Action 3 has the measurable edge on max fps 4k, water depth m.
Choose Insta360 - X4 if…
Insta360 - X4 has the measurable edge on max video, stabilization quality.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why DJI - Osmo Action 3 wins
- ▲Max 4K fps — 100.00% more. 120 vs 60.
- ▲Waterproof depth — 60.00% more. 16 m vs 10 m.
Why Insta360 - X4 wins
- ▲Max video: 8K (vs 4K120).
- ▲Stabilization: gimbal-class (vs advanced).
Spec comparison
Video
| Spec | DJI - Osmo Action 3 | Insta360 - X4 |
|---|---|---|
| Max video | 4K120 | 8Klead |
| Max 4K fps | 120lead | 60 |
| HDRⓘ | true | true |
| Log profileⓘ | false | false |
Stabilization
| Spec | DJI - Osmo Action 3 | Insta360 - X4 |
|---|---|---|
| Horizon lock | true | true |
| Stabilization | advanced | gimbal-classlead |
Durability
| Spec | DJI - Osmo Action 3 | Insta360 - X4 |
|---|---|---|
| Waterproof depth | 16 mlead | 10 m |
| Weight | 145 glead | 203 g |
| Removable lens | false | false |