Vivo TWS 4
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Revision as of 14:04, 28 September 2025 by Lyj20222694 (talk | contribs)
Classification
| Vivo TWS 4 | |
|---|---|
| Classification | |
| Grade | A- |
| Calculator version | [[:Category:Calculator v|]] |
| Classification date | |
| Information | |
| Name | vivo TWS 4 |
| Brand by Parent | vivo by BBK Electronics |
| Generation | |
| Model(s) | |
| Release date | 2024-03-26 |
| Type/Category | Earphone |
| Website | [1] |
| Status | |
| More | |
| Dimensions | |
| Mass | |
| Operating system | |
| Companion App | |
| CPU | |
| GPU | |
| Memory | |
| Storage | |
| Battery | Earbuds ~45–50 mAh each; Case ~420–480 mAh (typical) |
| Power | Up to 6–10 hours per charge (ANC off/on); up to 40–45 hours with case |
| Charging | USB‑C wired; ~1 h earbuds, ~2 h case; 10 min charge ≈ 2 h playback (typical) |
| Display | |
| Camera | |
| Sound | Adaptive ANC (up to ~55 dB), transparency mode, 3‑mic call noise reduction, Hi‑Res Audio Wireless, 24‑bit/96 kHz support, DeepX 3.0 sound presets |
| Connectivity | Bluetooth 5.4; codecs: SBC/AAC/LC3/LHDC; multipoint, Google Fast Pair/vivo FlashConnect, low‑latency gaming mode (~44–55 ms) |
| Device | |||
|---|---|---|---|
| Criterion | Value | Proof(s) | Comment |
| Known hardware tampering | None | [2] | |
| Known vulnerabilities | None | [3] | |
| Prior attacks | None | [4] | |
| Updatability | Very common | [5] | |
| Category score | 1 | ||
| System | |||
|---|---|---|---|
| Criterion | Value | Proof(s) | Comment |
| Authentication with other systems | Partial | [6] | |
| Communications | Encrypted with up-to-date encryption | [7] | |
| Storage | Encrypted with up-to-date encryption | [8] | |
| Category score | 2 | ||
| User Authentication | |||
|---|---|---|---|
| Criterion | Value | Proof(s) | Comment |
| Account management | Basic | [9] | |
| Authentication | Basic | [10] | |
| Brute-force protection | Exist | [11] | |
| Event logging | Access event logged | [12] | |
| Passwords | Require change after setup with complexity requirements | [13] | |
| Category score | 2 | ||
| Grade | A- |
|---|
