# K081125: Wrist Pulse Oximeter MD300W

- Pathway: 510(k) (Special)
- Applicant: Beijing Choice Electronic Technololgy Co., Ltd.
- Decided: Jul 2, 2008 after 72 days
- Product code: DQA (Oximeter)
- Device class: 2
- Regulation: 21 CFR 870.2700
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 4 generations back to K001085 (2000). 4 ancestors in all.
10 later devices descend from it; 2 cite it directly.
0 of 15 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K072825: Fingertip Pulse Oximeter, Model MD300I, Beijing Choice Electronic Technololgy Co., Ltd. (2008) Summary page 1.

## Most influential descendants
- K172366: Wrist Pulse Oximeter (2018), 5 descendants of its own
- K122046: Wrist Pulse Oximeter (2013), 3 descendants of its own
- K191088: Checkme O2 Pulse Oximeter (2019), 2 descendants of its own
- K132407: Vital Signs Patch System (in Short VSP) (2014), 1 descendant of its own
- K242876: Pulse Oximeter ( PO2, PO2A, PO2B) (2025), 0 descendants of its own

## Indications for use
The MD300W wrist oximeter is a portable non-invasive, spot-check, oxygen saturation of arterial hemoglobin (SpO2) and pulse rate of adult and pediatric patient at home, and hospital (including clinical use in internist/ surgery, Anesthesia, intensive care and etc). Not for continuously monitoring.

Source page: https://510kreport.com/device/K081125
Methodology: https://510kreport.com/methodology