Between the X4 and HDR-AS300, the X4 comes out ahead in horizon lock and max video, while the HDR-AS300 wins on waterproof depth. Overall, the X4 scores 58.6 and the HDR-AS300 scores 58.6 on our Mars Score.
Which should you buy?
These two are evenly matched on the broad strokes, with the decision sitting on which individual spec advantages weigh more for your use.
Pick the X4 if you care most about horizon lock and max video. The biggest gaps in its favor are horizon lock, max video, stabilization.
Pick the HDR-AS300 if you care most about waterproof depth. Its strongest claims are waterproof depth.
Both ship with comparable max 4k fps, so those specs don't 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 tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Insta360 - X4 wins
- ▲Has Horizon lock.
- ▲Max video: 8K (vs 4K60).
- ▲Stabilization: gimbal-class (vs advanced).
Why Sony - HDR-AS300 wins
- ▲Waterproof depth — 500.00% more. 60 m vs 10 m.
Spec comparison
Video
| Spec | Insta360 - X4 | Sony - HDR-AS300 |
|---|---|---|
| Max video | 8Klead | 4K60 |
| Max 4K fps | 60 | 60 |
| HDRⓘ | truelead | false |
| Log profileⓘ | false | false |
Stabilization
| Spec | Insta360 - X4 | Sony - HDR-AS300 |
|---|---|---|
| Horizon lock | truelead | false |
| Stabilization | gimbal-classlead | advanced |
Durability
| Spec | Insta360 - X4 | Sony - HDR-AS300 |
|---|---|---|
| Waterproof depth | 10 m | 60 mlead |
| Weight | 203 g | 109 glead |
| Removable lens | false | false |
Spec-level deep dives
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