# K133872: Aria Wifi Smart Scale

- Pathway: 510(k) (Traditional)
- Applicant: Fitbit, Inc.
- Decided: Jun 2, 2014 after 164 days
- Product code: MNW (Analyzer, Body Composition)
- Device class: 2
- Regulation: 21 CFR 870.2770
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 6 generations back to K930599 (1994). 6 ancestors in all.
No later device cites it as a predicate yet.
0 of 7 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K121971: Withings, Smart Body Scale, Zhongshan Transtek Electronics Co., Ltd. (2012) Summary page 1.

## Indications for use
The ARIA WiFi Smart Scale is a body analyzer that measures body weight and uses bioelectrical impedance analysis (BIA) technology to estimate body fat percentage in generally healthy individuals 10 years of age or older. It is intended for home use only.

Source page: https://510kreport.com/device/K133872
Methodology: https://510kreport.com/methodology