Favero
Favero Assioma PRO RS-2
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Released 2025-06
Best Cycling Power Meters · head-to-head
Favero Assioma PRO RS-2 vs 4iiii Precision 3+
A sourced, side-by-side comparison. Favero Assioma PRO RS-2 is cheaper at —. Every spec and price links to its source.
4iiii
4iiii Precision 3+
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Favero Assioma PRO RS-2 | 4iiii Precision 3+ |
|---|---|---|
| US price | — | — |
| Brand | Favero | 4iiii |
| Released | 2025-06 | — |
| Mount type | pedal | crank-arm |
| Measurement sides | dual-sided | single-sided |
| Accuracy pct | 1 | 1 |
| Weight grams | — | 9 |
| Battery type | rechargeable-liion | CR2032 |
| Battery life hrs | 160 | 800 |
| Connectivity | ANT+/BLE | ANT+/BLE |
| Power balance measured | Yes | No |
| Cycling dynamics | Yes | Yes |
| Waterproof rating | IP67 | IPX7 |
| Warranty years | 2 | 3 |
Sources — Favero Assioma PRO RS-2: cycling.favero.com (verified 2026-07-13). 4iiii Precision 3+: 4iiii.com (verified 2026-07-13).
What's the difference between the Favero Assioma PRO RS-2 and 4iiii Precision 3+?
Where the two actually differ on the specs we track (7 of 11). Matching specs are omitted.
- Mount type: Favero Assioma PRO RS-2 pedal vs 4iiii Precision 3+ crank-arm
- Measurement sides: Favero Assioma PRO RS-2 dual-sided vs 4iiii Precision 3+ single-sided
- Battery type: Favero Assioma PRO RS-2 rechargeable-liion vs 4iiii Precision 3+ CR2032
- Battery life hrs: Favero Assioma PRO RS-2 160 vs 4iiii Precision 3+ 800
- Power balance measured: Favero Assioma PRO RS-2 true vs 4iiii Precision 3+ false
- Waterproof rating: Favero Assioma PRO RS-2 IP67 vs 4iiii Precision 3+ IPX7
- Warranty years: Favero Assioma PRO RS-2 2 vs 4iiii Precision 3+ 3