No photo yet
Sigeyi
Sigeyi AXO SL
$389.5
Best Cycling Power Meters · head-to-head
Sigeyi AXO SL vs Magene P505
A sourced, side-by-side comparison. Magene P505 is cheaper at $349. Every spec and price links to its source.
Magene
Magene P505
$349Cheaper
Which is better: the Sigeyi AXO SL or Magene P505?
On the specs we track, they're closely matched. The Magene P505 is the cheaper at $349.
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Sigeyi AXO SL | Magene P505 |
|---|---|---|
| US price | $389.5 | $349 |
| Brand | Sigeyi | Magene |
| Released | — | — |
| Mount type | spider | spider |
| Measurement sides | — | — |
| Accuracy pct | 1 | 1 |
| Weight grams | — | — |
| Battery type | rechargeable-liion | rechargeable-liion |
| Battery life hrs | 300 | 200 |
| Connectivity | ANT+/BLE | ANT+/BLE |
| Power balance measured | No | No |
| Cycling dynamics | Yes | No |
| Waterproof rating | IP67 | IPX7 |
| Warranty years | 2 | 2 |
Sources — Sigeyi AXO SL: sigeyishop.com (verified 2026-07-13). Magene P505: magene.com (verified 2026-07-13).
What's the difference between the Sigeyi AXO SL and Magene P505?
Where the two actually differ on the specs we track (3 of 11). Matching specs are omitted.
- Battery life hrs: Sigeyi AXO SL 300 vs Magene P505 200
- Cycling dynamics: Sigeyi AXO SL true vs Magene P505 false
- Waterproof rating: Sigeyi AXO SL IP67 vs Magene P505 IPX7