# Wahoo Elemnt Bolt V2 vs Sigma ROX 12.1 Evo: specs and price compared

A sourced, side-by-side comparison of the Wahoo Elemnt Bolt V2 (Wahoo) and Sigma ROX 12.1 Evo (Sigma) among bike computers. Wahoo Elemnt Bolt V2 is the cheaper of the two at $279.99.

## Side by side

| Spec | Wahoo Elemnt Bolt V2 | Sigma ROX 12.1 Evo |
| --- | --- | --- |
| US price | $279.99 | $379.95 |
| Brand | Wahoo | Sigma |
| Released | 2021-05 | 2023-06 |
| Display size (in) | 2.2 in | 3.0 in |
| Touchscreen | No | Yes |
| Battery life hours | 15 | 14 |
| Preloaded maps | Yes | Yes |
| Multiband gnss | No | No |
| Connectivity | ANT+, Bluetooth, Wi-Fi | ANT+, Bluetooth, Wi-Fi |
| Weight (g) | 70 | 112 |

## Key differences

- Display size (in): Wahoo Elemnt Bolt V2 2.2 in vs Sigma ROX 12.1 Evo 3.0 in
- Touchscreen: Wahoo Elemnt Bolt V2 No vs Sigma ROX 12.1 Evo Yes
- Battery life hours: Wahoo Elemnt Bolt V2 15 vs Sigma ROX 12.1 Evo 14
- Weight (g): Wahoo Elemnt Bolt V2 70 vs Sigma ROX 12.1 Evo 112

## What reviewers say

**Wahoo Elemnt Bolt V2** — Two whitelisted testers cover the V2. Cycling Weekly's year-later long-term test (Sept 2022) calls it user-friendly and accurate, nailing everything but navigation refinement. DC Rainmaker's launch-window review-in-progress (May 2021) hit severe firmware bugs: crashes, sensor dropouts, and delayed turn cues. The verdict splits sharply on reliability, and that split tracks the test date. (2 sourced reviews.)

**Sigma ROX 12.1 Evo** — Only one whitelisted tester (BikeRadar) published a hands-on review of this exact model. BikeRadar rated it 2/5, praising easy route-following and rich training data but panning meagre battery life (10h with a heart rate monitor only; 4.5h navigating with sensors), a rain-triggered touchscreen, cheap build and an uncompetitive £379.95 price. (1 sourced review.)

## Sources

- Wahoo Elemnt Bolt V2: https://support.wahoofitness.com/hc/en-us/articles/22186449789842-ELEMNT-BOLT-v2-2021-Product-Information (support.wahoofitness.com, verified 2026-06-19)
- Sigma ROX 12.1 Evo: https://sigma.bike/product/rox-12-1-evo/ (sigma.bike, verified 2026-06-19)

Canonical: https://frontdeskreview.com/gear/bike-computers/wahoo-elemnt-bolt-v2-vs-sigma-rox-12-1-evo/
Cite: Per The Front Desk Review, Wahoo Elemnt Bolt V2 ($279.99) vs Sigma ROX 12.1 Evo ($379.95) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/bike-computers/wahoo-elemnt-bolt-v2-vs-sigma-rox-12-1-evo/
License: CC BY 4.0.