What is Kardena?Kardena is a brand of smartwatches, smart rings and other wearables. Our products combine features for recording fitness, activity and selected health data with practical functions for everyday life. Depending on the model, readings and information on heart rate, activity, sleep, oxygen saturation or other body and fitness parameters, for example, can be recorded and displayed in the accompanying app. |
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Our Vision
Our vision is to make modern wearable technology easily accessible and comfortable to use.
Smartwatches and smart rings can help you keep track of your personal fitness, activity and health data over longer periods and better understand how things develop in your everyday life.
We aim to combine technical features, simple operation and a design that works for everyday life.
Our Mission
Kardena develops and sells wearables that help users record and view a range of fitness, activity and health data.
Our focus includes:
- Smartwatches and smart rings with a range of sensor and tracking functions.
- Recording measurement and activity data such as heart rate, sleep, oxygen saturation or – depending on the model – other parameters.
- Products whose basic functions can be used without a compulsory paid subscription.
- Additional safety and convenience features, such as SOS functions on models equipped with them.
- Continuously developing our products, taking into account customer feedback and technical advances.
Our goal is to offer wearables that fit easily into everyday life and give users clear access to their personal measurement and activity data.
What makes Kardena special?
1. A focus on practical, everyday measurement and tracking features
Depending on the model, Kardena smartwatches and smart rings feature a range of sensors and analysis functions.
These can be used to record and display data on heart rate, activity, sleep, oxygen saturation or other supported parameters, for example.
The available functions and sensors vary from model to model.
2. Smartwatches & smart rings for everyday life, fitness and wellbeing
Depending on the model, Kardena products offer features including:
- Recording and displaying heart rate and activity data.
- ECG functions on models equipped with them.
- SOS and emergency call functions on selected smartwatches and smart rings.
Continuous or regular recording of various fitness and body data. - Software-based analysis and clear presentation of measured values.
These functions are intended primarily for personal information, fitness and wellness purposes. Unless expressly stated otherwise for a product, the values obtained do not replace a medical examination or diagnosis.
3. No compulsory subscription
- As a rule, no paid Kardena subscription is required for the basic use of our smartwatches and smart rings.
- Which functions are available, and which apps or services are needed, depends on the product model.
- Users can use the data recorded by the devices and provided in the relevant app for their own personal overview.
Our Commitment to Innovation
Kardena is continuously developing its wearables and their features.
Depending on the product, the following features may be available, for example:
- Recording and displaying heart activity data
- Heart rate and heart rate variability (HRV)
- Graphical analysis of heart rate data
- Blood pressure estimation or blood pressure measurement functions on models equipped with them
- Oxygen saturation (SpO2)
- Sleep and recovery analysis
- Regular or continuous pulse measurement
- Skin or body temperature measurement on devices equipped with it
- Menstrual and cycle tracking
- Fitness, movement and activity tracking
The type, scope and accuracy of the features may vary depending on the model, how the device is worn, the situation in which it is used, the software version and individual physical characteristics.
Readings from wearables may be subject to technical deviations. If you have health concerns, unusual readings or medical questions, you should seek professional medical advice.
Who is Kardena for?
Kardena products are aimed at, among others:
- People who want to track their activity, fitness and body data in everyday life.
- People who want to monitor certain readings and how they develop over a longer period.
- Older people and their families who would like to use additional convenience or safety features, such as an SOS function.
- Sporty and active people who want to record their activities and training data.
- People looking for a combination of smartwatch features, health vitals monitoring and a design that works for everyday life.
Why Kardena?
- A range of features for recording activity, fitness and body data.
- Basic use without a compulsory Kardena subscription.
- Different models for different uses and requirements.
- Features for everyday life, fitness and wellbeing.
- Depending on the model, long battery life and various safety and convenience features.
Important Information on Health Features
Depending on the model, Kardena wearables can record various health, fitness and body data, or calculate or estimate them on the basis of sensor data.
Unless a product is expressly designated as a medical device, these features are intended solely for general information and for fitness and wellness purposes.
The devices and their readings are not intended to diagnose, treat, cure or prevent any disease or health condition. They do not replace a medical examination or professional medical advice.
If you have health concerns or notice unusual readings, please consult a doctor or another healthcare professional.
Discover Kardena
Discover our smartwatches and smart rings and find the model that suits your personal needs and everyday life:
Smart Rings |



Smart Rings