Verifiable specifications
Product information supported by official records
| Card speed class | U3 card required by the V2.2 English manual | View source |
|---|---|---|
| File segmentation | FAT32 video starts another file after the 4 GB boundary | View source |
| Ports | Micro USB and Micro HDMI ports | View source |
| Housing audio | The manual says the waterproof case prevents sound recording | View source |
Separate missing sound from a recording failure
A clip recorded in the waterproof case may lack sound for the reason documented in the manual. That configuration should be checked before concluding the microphone is damaged.
For connections, retain the exact names Micro USB and Micro HDMI. Neither should be silently substituted with the USB-C connection found on some other action cameras.
A file boundary is not the card-capacity limit
The U3 speed requirement is readable in the original. Its capacity value is not reliably readable in the available document, so no maximum capacity is asserted here.
The manual separately describes FAT32 video moving to a new file after 4 GB. That number describes file segmentation, not the maximum size of the whole card. Keep the two questions separate when reviewing a long recording.
Exact product identity
Product identifiers in official records
GTINs, UPCs, manufacturer SKUs and model codes can identify different colors, configurations or bundles. Only identifiers stated in official records are shown; an unpublished ASIN is not inferred.
| Identifier | Exact value | Variant or bundle | Market | Source and review |
|---|---|---|---|---|
| Manufacturer product name | Brave 4 | Model level | United States | AKASO · akasotech.comPDF page 1 — AKASO Brave 4 · |