2. E4 WRISTBAND OVERVIEW
The E4 is worn like a wristwatch. All of the sensors are embedded in the device: the PPG sensor
and the temperature sensor are on the boom side of the device while the wristband holds the
EDA electrodes. The E4 is water resistant but it should not be submerged in liquids.
The picture below depicts an overview of the features of the E4:
Event Mark Buon
Baery Life
Recording Mode: 36+ Hours
Streaming Mode: 20+ Hours
Form Factor
Wrist-watch like
Case size: 44mm x 40mm x 16mm
Weight: 25gr
Photoplethysmography (PPG)
Blood Volume Pulse
(supporng Hearth Rate Variability
analysis for stress and relaxaon)
Flash Memory
3-Axis Accelerometer
Movement and Acvity
Temperature
Electrodermal Acvity
Skin conductance
Bluetooth® Smart
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