LOT OF 3 Smart Ring Health Fitness Tracker Sleep Heart Rate Blood Oxygen Monitor


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This is a lot of 3 smart rings – two size 8 and one size 9 (see pics, 18mm and 19mm respectively).

They were used for software development over the period of a month and are basically unworn as far as regular use goes (they stayed at the desk, they weren’t worn actively). That said, they do have signs of wear like some surface scratching.

All are complete with their boxes, packaging material, manual and charging cables.

These are generic no-name rings.





They all have pulse/oxygen (SpO2) but each one has a few other features.

2 of them are made of aluminum and one resin.

The SR200 works the best out of all of them, one of the “R” models doesn’t like to stay connected (can’t remember which).

You need a proprietary app to use these, some of the apps are on Google Play but some are not (you must sideload them).

I wouldn’t advise using these for important measurements but they can provide some insight.

The batteries will be dead when they arrive because they are activated by the slightest motion so you will need to charge them.

Please check your ring size prior to ordering. If the ring is too big or too small it won’t provide accurate measurements.

Additional information

Weight 1 lbs
Dimensions 8 × 8 × 8 in

Sporting Goods > Fitness, Running & Yoga > Fitness Technology > Activity Trackers




Fitness Tracker Ring

Measurement Provided

Heart Rate

Item Height

5.0 cm


Sleep Tracker

Item Length

15.0 cm


Running & Jogging

Item Weight

0.07 kg

Item Width

12.0 cm

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