Sigma · Updated June 2026
Sigma ROX 12.1 Evo: price, specs & release date
Sigma ROX 12.1 Evo, released 2023-06. Every price and spec below is linked to its source and dated — no guesses.
Source: sigma.bike verified ✓ corroborated verify in ledger
The Sigma ROX 12.1 Evo is listed at $379.95 on sigma.bike as of 2026-06-27, #10 cheapest of 18 bike computers (median $365); other retailers may be lower. It earns a Bronze Deskmark — 29/100 pay-blind standing, #14 of 18 in class.
Verified Jun 27, 2026 · figures linked to their source in the table below
- Best for Easy-to-follow turn-by-turn navigation and clear routing; Data-rich training metrics with a capable companion app.
- Skip if Meagre battery life, far below the claimed 14 hours is a dealbreaker.
Is the Sigma ROX 12.1 Evo a good buy?
At $380, the Sigma ROX 12.1 Evo is #10 cheapest of the 18 bike computers we track, where the median is $365. On the spec sheet, its display size of 3.0 in is above the median of the 18, its battery life hours of 14 is below the median of the 18, and its weight of 112 g is above the median of the 17. By release date, it is among the newer of the 17 we date.
Evidence of Record
Our data- Independent labsmeasured it
- 1
- Physical metricsrecorded
- 1
- Outlets on recordall tested
- 1
One independent lab measured this product across 1 physical metric — battery. These numbers rest on a single hands-on source so far.
Review consensus · sourced & dated
What reviewers say about the 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.
Based on 1 review · 1 lab-tested · 2023-10-05
Tested by BikeRadar
Consistently praised
- Easy-to-follow turn-by-turn navigation and clear routing
- Data-rich training metrics with a capable companion app
Commonly flagged
- Meagre battery life, far below the claimed 14 hours
- Touchscreen misbehaves in rain, skipping pages and changing settings
- Uncompetitive £379.95 price versus Garmin/Wahoo rivals
- Cheap-feeling build, oversensitive side buttons and shrill alert tones
Where reviewers disagree Single-source, so no cross-source comparison is possible. Internally, BikeRadar concedes that navigation is the device's strongest feature yet says its poor battery life leaves that benefit short-lived.
The sources (1)
Battery life (heart rate monitor only): 10 hours · Battery life (navigating + sensors): 4.5 hours
The ease with which you can follow routes on the Sigma ROX 12.1 Evo is its strongest suit.
Feeble battery life is a major limitation.
The low-quality buttons and touchscreen do not befit its mid-range price.
Specifications
| Price (US) | $379.95 MSRP, basic set (device + mount) |
|---|---|
| Brand | Sigma |
| Released | 2023-06 |
| Display size (in) | 3.0 in |
| Touchscreen | Yes |
| Battery life hours | 14 |
| Preloaded maps | Yes |
| Multiband gnss | No |
| Connectivity | ANT+, Bluetooth, Wi-Fi |
| Weight (g) | 112 |
Source: sigma.bike (verified 2026-06-19) · corroborated by bikeradar.com. Display 3.0 in (76 mm) touchscreen (240×400 px, 16M colors), weight 112 g (per BikeRadar; draft's 110 g corrected to 112 g), battery 14 hr standard, preloaded multi-country maps confirmed via sigma.bike and BikeRadar (re-verified 2026-06-19). Multi-constellation GPS/GLONASS/Galileo/BeiDou but single-band — no L1+L5 dual-band, noted as a limitation by reviews; multiband_gnss=false. MSRP $379.95. Released June 12 2023.
Is the Sigma ROX 12.1 Evo worth it vs cheaper bike computers?
Sigma ROX 12.1 Evo against its closest cheaper and pricier bike computers on the specs that matter — every value sourced. See all 18 ranked
| Product | Price | Display size (in) | Touchscreen | Battery life hours | Preloaded maps | Multiband gnss |
|---|---|---|---|---|---|---|
| Sigma ROX 12.1 Evo this | $379.95 | 3.0 in | Yes | 14 | Yes | No |
| Garmin Edge 540 | $349.99 | 2.6 in | No | 26 | Yes | Yes |
| Bryton Rider S800 | $399.95 | 3.4 in | Yes | 36 | Yes | No |
Frequently asked questions
What do reviewers say about the 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. Praised: Easy-to-follow turn-by-turn navigation and clear routing; Data-rich training metrics with a capable companion app. Flagged: Meagre battery life, far below the claimed 14 hours; Touchscreen misbehaves in rain, skipping pages and changing settings; Uncompetitive £379.95 price versus Garmin/Wahoo rivals; Cheap-feeling build, oversensitive side buttons and shrill alert tones; Lacks live tracking and a climbing feature. (From 1 tester review, 1 lab-tested.)
How much does the Sigma ROX 12.1 Evo cost?
The Sigma ROX 12.1 Evo has a US price of $379.95 (MSRP, basic set (device + mount)), as of 2026-06-19.
How does the Sigma ROX 12.1 Evo compare on price?
At $380, the Sigma ROX 12.1 Evo is #10 cheapest of the 18 bike computers we track, where the median is $365.
When was the Sigma ROX 12.1 Evo released?
The Sigma ROX 12.1 Evo was released 2023-06.
What are the Sigma ROX 12.1 Evo's key specs?
Sigma ROX 12.1 Evo (Sigma): display size in 3.0 in, touchscreen Yes, battery life hours 14, preloaded maps Yes, multiband gnss No. Full sourced spec sheet verified 2026-06-19.
Price of record: $379.95 at sigma.bike, 2026-06-27. Other retailers may be lower — check the current price:
See Sigma ROX 12.1 Evo on Amazon As an Amazon Associate we earn from qualifying purchases.Similar bike computers
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Compare with
Head-to-head
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Step up
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