UV sensor including free app for healthy exposure to the sun
Get sun protection recommendations like sunscreen reminders and more
Works without battery (solar powered) and is 100% waterproof
sun-a-wear is developed and manufactured in Switzerland. Each sensor is carefully tested before we send it to you.
sun-a-wear is a good tool to achieve a healthier approach to sun exposure.
The advantage of a UV tracker is that the recommended actions are personal and not just based on general weather forecasts.
UV and your health
sun-a-wear measures your personal UV dose
Sunburn and skin cancer: Your skin never forgets UV exposure. With sun-a-wear you have a tool to measure your dose and avoid overexposure.
Sunscreen: The use of sunscreen is often based on gut feeling. sun-a-wear can remind you to apply sunscreen at the right moments and calculates the protective effect of the sunscreen.
Skin aging: Did you know that your skin ages mainly because of UV radiation? Keep an eye on your UV exposure and protect your skin.
Vitamin D: Very little sun can lead to vitamin D deficiency. The app can help you take countermeasures.
Your UV dose
No more guessing if you are close to getting too much sun. The UV sensor measures the radiation directly on your body and can therefore show you your UV dose.
Helpful predictions
Find out in the morning whether you need sunscreen today or whether it makes sense to eat lunch in the sun. sun-a-wear's predictions are tailored to your skin type.
Always with you
Due to the integrated solar cell, the sensor never has to be charged. Just clip it on or put on the bracelet and go outside! The sensor and the app measure in the background.
High-tech
Intelligent electronics in a small space

Solar powered: The sensor has no battery and does not need to be charged.
Versatile: The sensor can be worn with the clip on clothing, a bag, backpack or with the wristband.
Low radiation: Thanks to Bluetooth Low Energy, the sensor emits 1000 times less than Wifi.
Waterproof: You can even go swimming with it.
What our customers say
"I see great potential in sun-a-wear technology, both for the population and for research."
Hong Phan, Chief Physician, Arzthaus Zug
"I often went without sunscreen out of convenience. That usually worked out well, but just not always. Now I feel more comfortable outdoors because when in doubt, I can check the sun-a-wear app to see what my UV exposure is and put on cream when necessary."
Tim, sun-a-wear user, Zurich
"With my dark skin, I don't use sunscreen because I suffer from vitamin D deficiency. Still, it's important for me to know at what point the UV rays are more harmful than their benefits. That's why I use sun-a-wear daily and can balance it."
Jenny, sun-a-wear user, Bassersdorf
Buy without risk
If you don't like your sensor, you can easily return it up to 30 days after purchase.
Swiss quality
sun-a-wear was developed and manufactured in Switzerland. Every sensor is carefully tested before it gets sent to you.
Strengthen awareness
Many do not realize how important it is to deal with UV radiation in a responsible manner. By setting a good example, you are helping to protect others!