We often wear wireless headphones, smartwatches and fitness trackers directly on the body for hours. How much wireless exposure does that create?
How strong is Bluetooth?
Bluetooth is designed for short distances and transmits at very low power, usually a fraction of what a phone emits during a call. According to the FOPH, the SAR value of Bluetooth headphones is therefore many times lower than that of a phone held to the ear. Making calls with Bluetooth headphones considerably reduces exposure at the head.
And the smartwatch?
Smartwatches and fitness trackers regularly sync with the phone via Bluetooth; some models also have Wi-Fi or their own mobile connection (eSIM). The eSIM version in particular transmits similarly to a phone during calls.
Everyday tips
- Headphones instead of phone at the ear. Wired or Bluetooth, both are better than the phone directly at your head.
- Headphones back in the case after use. That disconnects and charges them.
- Bluetooth off when not needed. It also saves battery.
- Take off your smartwatch at night. Unless you deliberately use sleep tracking.
- Use an eSIM watch selectively. For example when jogging, not all day.
VIVOBASE MOVE fits into any bag and accompanies you on the go. It is not a shield; headphones and watch work as usual.
Quick answers
Are Bluetooth headphones harmful?
Bluetooth transmits at very low power. According to the FOPH, the SAR value of Bluetooth headphones is many times lower than that of a phone at the ear.
Does a smartwatch transmit constantly?
It syncs regularly via Bluetooth. Models with eSIM transmit similarly to a phone during calls.
More calm in your digital everyday life
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Get the free guideFree consultationThis article does not replace medical advice. VIVOBASE is not a medical device.



