The first version of the Ou Ring 4 was produced only in a stainless steel case. The new model has a more elegant and bright design, but with increasing weight. Now, depending on the public size, weighing 5.1 to 8.1 grams, the original steel model had a weight of 3.3 to 5.2 grams. The internal components are made of titanium and the ring protects water resistance up to 100 meters.
In terms of functionality, the ceramic version of Oura Ring 4 completely repeats the original. The device provides autonomous operations equipped with heart rate, oxygen, skin temperature and accelerator sensors to monitor the movement. Included in the smartphone application, such activities automatically recognize such as a bicycle and running allows comprehensive sleep and physical activity. It also allows you to monitor the level of stress, the state of the heart, the menstrual cycle in women, and the daily indicators of the physical shape. A subscription worth $ 5.99 per month is required to access all these functions.
The cover for charging is compact and light, 5.6 x 5.5 x 1.7 centimeters in size, the weight of the instrument is 60 grams. In this case, the lid can charge the OUR RING 4 to five times without charge.
Source: Ferra
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