Fourth Frontier
Fourth Frontier Frontier X2
$579
Best Portable Ecg Monitors · head-to-head
Fourth Frontier Frontier X2 vs Withings BPM Core
A sourced, side-by-side comparison. Withings BPM Core is cheaper at $249.95. Every spec and price links to its source.
Withings
Withings BPM Core
$249.95Cheaper
Which is better: the Fourth Frontier Frontier X2 or Withings BPM Core?
On the specs we track, they're closely matched. The Withings BPM Core is the cheaper at $249.95.
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 |  Fourth Frontier Frontier X2 |  Withings BPM Core |
|---|---|---|
| US price | $579 | $249.95 |
| Brand | Fourth Frontier | Withings |
| Released | — | — |
| Leads | 1 (continuous single-lead ECG resembling the V5 12-lead position) | 1 |
| Recording duration | Up to 24 hours of continuous ECG recording per session | — |
| Afib detection | — | Yes |
| Fda clearance | FDA 510(k) cleared (device itself is marketed as wellness, not diagnostic, per its own disclaimer) | FDA cleared |
| Bluetooth | Yes | No |
| Display | None; chest-strap wearable with no on-device screen, data reviewed via app/web dashboard | Small on-device LCD showing the numeric blood-pressure reading; no ECG waveform display on the cuff itself |
| Onboard storage | Onboard memory chip records data with no phone connection required, described as 'zero data loss' | — |
| Battery | Up to 14 days on typical use (~1 hour of ECG recording per day) | Rechargeable, built-in |
| Companion app | Frontier X app (live dashboards, trends, workout history) plus a web dashboard | Health Mate (iOS/Android) |
Sources — Fourth Frontier Frontier X2: fourthfrontier.com (verified 2026-11-05). Withings BPM Core: wcs.withings.com (verified 2026-08-05).
What's the difference between the Fourth Frontier Frontier X2 and Withings BPM Core?
Where the two actually differ on the specs we track (6 of 9). Matching specs are omitted.
- Leads: Fourth Frontier Frontier X2 1 (continuous single-lead ECG resembling the V5 12-lead position) vs Withings BPM Core 1
- Fda clearance: Fourth Frontier Frontier X2 FDA 510(k) cleared (device itself is marketed as wellness, not diagnostic, per its own disclaimer) vs Withings BPM Core FDA cleared
- Bluetooth: Fourth Frontier Frontier X2 true vs Withings BPM Core false
- Display: Fourth Frontier Frontier X2 None; chest-strap wearable with no on-device screen, data reviewed via app/web dashboard vs Withings BPM Core Small on-device LCD showing the numeric blood-pressure reading; no ECG waveform display on the cuff itself
- Battery: Fourth Frontier Frontier X2 Up to 14 days on typical use (~1 hour of ECG recording per day) vs Withings BPM Core Rechargeable, built-in
- Companion app: Fourth Frontier Frontier X2 Frontier X app (live dashboards, trends, workout history) plus a web dashboard vs Withings BPM Core Health Mate (iOS/Android)