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Bluetooth, headphones and smartwatches: how much wireless is that?

How strongly Bluetooth headphones, smartwatches and fitness trackers transmit, and how to use them mindfully.

By Mike Fuhrmann, VIVOBASE Switzerland

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.

In shortBluetooth headphones are better for calls than the phone at your ear. If you want as little wireless as possible on your body, use them deliberately rather than constantly.

Everyday tips

  1. Headphones instead of phone at the ear. Wired or Bluetooth, both are better than the phone directly at your head.
  2. Headphones back in the case after use. That disconnects and charges them.
  3. Bluetooth off when not needed. It also saves battery.
  4. Take off your smartwatch at night. Unless you deliberately use sleep tracking.
  5. 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.

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Sources

This article does not replace medical advice. VIVOBASE is not a medical device.

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