InBody 520 vs InBody R20
InBody 520 and InBody R20: compare documented specifications, features and limitations. Check the reports and explanation offered by the provider. More features alone do not establish better accuracy.
InBody 520: when to consider it
An older model for following fat, muscle and water during nutrition or exercise changes, and for understanding past results. Includes ECW/TBW and lean-mass distribution across the arms, legs and trunk.
InBody R20: when to consider it
R20 was developed for home body-composition monitoring and also appears in some fitness services. It gives a basic muscle-and-fat overview. For a more detailed consultation, it matters whether the provider also uses the computer report.
Specifications side by side
Highlighted rows differ. Unknown values stay unknown.
| Specifications | InBody 520 | InBody R20 |
|---|---|---|
| Recording time | 50 s | 30 s |
| Body weight range | 10–250 kg | 10–150 kg |
| Height range | 95–220 cm | Not verified |
| Device weight | 26 kg | 3 kg |
| Measurement frequencies | 5, 50, 500 kHz | 20, 100 kHz |
| Contact electrodes | 8 | 8 |
| Measurement position | Standing | Standing |
| Operating temperature | 10–40 °C | 10–40 °C |
| Dimensions (width × depth × height) | 522 × 843 × 1,015 mmEvidence | 321 × 360 × 58 mmEvidence |
| Age in the cited catalogue | 3–99 yearsEvidence | 6–99 yearsEvidence |
| Impedance measurements | 15Evidence | 10Evidence |
| Display | Colour LCD, 640 × 480 pixelsEvidence | LCD with basic results and buttonsEvidence |
| Documented interfaces | RS-232C, USB Host, USB Slave and EthernetEvidence | Cable USB to the original Lookin’Body Basic. Bluetooth belongs to the R20B variant.Model sources |
| Measured regions | Right and left arm, trunk, right and left legModel sources | Not verified |
| Weighing | Built-in weighing platform; height is enteredModel sources | Not verified |
| Results | Printed report and export through manufacturer softwareModel sources | Not verified |
| Device internal database capacity | Not verified | 300 recordsEvidence |
| Power | Not verified | AA batteries; the original documentation specifies battery operationModel sources |
| Modes | Not verified | Body composition analysis and weight-only modeModel sources |
| Detailed report | Not verified | Original Lookin’Body Basic on a computer; requires a working connectionModel sources |
| Variants | Not verified | Original R20 with USB; R20B is a separate Bluetooth variantModel sources |
Fat-free mass is not pure muscle mass. A single result is not a diagnosis. Different devices and similarly named metrics may use definitions that are not interchangeable.
Sources and verification
- Biospace — technické podání K130777 / technical submission
- InBody — InBody 520 Quick Installation Guide
- Biospace — InBody 520 User’s Manual (2011)
- MegaFitness — měření InBody 520 / testing service
- Biospace — 510(k) Summary K052646
- Biospace — FDA K092786
- InBody R20 brochure — BC-ENG-00-A-090706
- InBody R20 — původní uživatelský manuál
- Lady-Fit Znojmo — InBody R20
- Lady-Fit Znojmo — ceník
- Slim Nest Beauty — procedury
- InBody — tisková zpráva k 29. výročí / 29th anniversary press release

