# 4iiii Precision 3+ vs Sigeyi AXO SL: specs and price compared

A sourced, side-by-side comparison of the 4iiii Precision 3+ (4iiii) and Sigeyi AXO SL (Sigeyi) among cycling power meters.

## Side by side

| Spec | 4iiii Precision 3+ | Sigeyi AXO SL |
| --- | --- | --- |
| US price | not published | $389.5 |
| Brand | 4iiii | Sigeyi |
| Mount type | crank-arm | spider |
| Measurement sides | single-sided | — |
| Accuracy pct | 1 | 1 |
| Weight grams | 9 | — |
| Battery type | CR2032 | rechargeable-liion |
| Battery life hrs | 800 | 300 |
| Connectivity | ANT+/BLE | ANT+/BLE |
| Power balance measured | No | No |
| Cycling dynamics | Yes | Yes |
| Waterproof rating | IPX7 | IP67 |
| Warranty years | 3 | 2 |

## Key differences

- Mount type: 4iiii Precision 3+ crank-arm vs Sigeyi AXO SL spider
- Battery type: 4iiii Precision 3+ CR2032 vs Sigeyi AXO SL rechargeable-liion
- Battery life hrs: 4iiii Precision 3+ 800 vs Sigeyi AXO SL 300
- Waterproof rating: 4iiii Precision 3+ IPX7 vs Sigeyi AXO SL IP67
- Warranty years: 4iiii Precision 3+ 3 vs Sigeyi AXO SL 2

## Sources

- 4iiii Precision 3+: https://4iiii.com/precision-3-plus/ (4iiii.com, verified 2026-07-13)
- Sigeyi AXO SL: https://www.sigeyishop.com/axo-sl-2/ (sigeyishop.com, verified 2026-07-13)

Canonical: https://frontdeskreview.com/gear/cycling-power-meters/4iiii-precision-3-plus-vs-sigeyi-axo-sl/
Cite: Per The Front Desk Review, 4iiii Precision 3+ (not published) vs Sigeyi AXO SL ($389.5) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/cycling-power-meters/4iiii-precision-3-plus-vs-sigeyi-axo-sl/
License: CC BY 4.0.