Composants et caractéristiques

Jonathan
Rédigé par Jonathan
Dernière mise à jour

The Dreem 3 headband is made of plastic, foam, and fabric. 

It records three types of physiological signals via sensors: 

  • Brain activity via electroencephalography sensors (EEG) 
  • Movements via a 3-D accelerometer 
  • And breathing frequency via a 3-D accelerometer and microphone 

The EEG signal is measured by two electrodes in the frontal band (prefrontal position) and two at the back of the head (occipital position). One additional EEG electrode is used as a ground sensor to allow the micro-amplifier to work better. 

The 3D accelerometer is embedded in the top of the headband to ensure accurate measurements of the user’s head position and breathing frequency during the night. Schematically, the EEG and accelerometer are converted for subsequent digital signal processing in the acquisition board and calculation board. 

For audio, the headband is equipped with: 

  • A bone conduction speaker 

In addition, the headband has the following components on its top arch: 

  • A power button, circled by an LED light 
  • A volume button to change sound volume

Weight 

130g

Materials 

Hypoallergenic ABS 

Soft polyester fabric

Interface 

Sound feedback 

RGB LED indicator

Connectivity 

Classic Bluetooth 4.0 

Low Energy 

Bluetooth 4.0 Low Energy 

Bluetooth Classic 

Wifi b/g/n 2.4Ghz

Dimension 

Head perimeter 540mm to 620mm

Battery 

Audio 

Compatibility 

 

 

 

520mAh 

Up to 25 hours 

Bone Conductor system 

iOS=11; iPhone 5S and more recent; 

iPod 6th generation and more recent. 

Android=5+ and supporting Bluetooth Low Energy and Bluetooth

Size 

One Size Fits All - Adjustable with XS, S, M, L spacers

Charging time 

Languages 

Sensors 

 

 

3h30 

French - English - Spanish 

EEG sensors x4 and 1x ground sensor 

Accelerometer 

Microphone (optional)