# Favero Assioma PRO RS-2 vs 4iiii Precision 3+: specs and price compared

A sourced, side-by-side comparison of the Favero Assioma PRO RS-2 (Favero) and 4iiii Precision 3+ (4iiii) among cycling power meters.

## Side by side

| Spec | Favero Assioma PRO RS-2 | 4iiii Precision 3+ |
| --- | --- | --- |
| US price | not published | not published |
| 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 |

## Key differences

- 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 Yes vs 4iiii Precision 3+ No
- 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

## Sources

- Favero Assioma PRO RS-2: https://cycling.favero.com/shop/assioma-pro-rs2/ (cycling.favero.com, verified 2026-07-13)
- 4iiii Precision 3+: https://4iiii.com/precision-3-plus/ (4iiii.com, verified 2026-07-13)

Canonical: https://frontdeskreview.com/gear/cycling-power-meters/favero-assioma-pro-rs-2-vs-4iiii-precision-3-plus/
Cite: Per The Front Desk Review, Favero Assioma PRO RS-2 (not published) vs 4iiii Precision 3+ (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/cycling-power-meters/favero-assioma-pro-rs-2-vs-4iiii-precision-3-plus/
License: CC BY 4.0.