Omron
Omron Pocket Pain Pro (PM400)
$51.99Cheaper
Best Tens Units · head-to-head
A sourced, side-by-side comparison. Omron Pocket Pain Pro (PM400) is cheaper at $51.99. Every spec and price links to its source.
Omron
$51.99Cheaper
iReliev
$59.95
On the specs we track, they're closely matched. The Omron Pocket Pain Pro (PM400) is the cheaper at $51.99.
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✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | | |
|---|---|---|
| US price | $51.99 | $59.95 |
| Brand | Omron | iReliev |
| Released | — | — |
| Output channels | 1 | 2 |
| Intensity levels | 10 | 25 |
| Preset modes | 5 (3 pain-relief programs: Arm/Shoulder, Lower Back, Leg/Foot + 2 massage modes: Knead, Steady) | 8 |
| Power source | 2x AAA batteries (included) | 3x AAA batteries |
| Electrode pads included | 2 | — |
| Timer range min | 0-15 | up to 60 (adjustable) |
| Wireless | No | No |
| Fda cleared | Yes | Yes |
Sources — Omron Pocket Pain Pro (PM400): omronhealthcare.com (verified 2026-08-01). iReliev TENS Unit Pain Relief System (ET-1313): medgrade.org (verified 2026-08-01).
Where the two actually differ on the specs we track (5 of 8). Matching specs are omitted.