![](/sites/default/files/styles/hero_xl_2500x1406/public/main_screen40000_3.png?h=d1cb525d&itok=qGToPhr2)
T-Watch
Benefits
Ease of Use
The device can be configured without programming skills. An open-source configuration application further simplifies this process.
Autonomy
The device works independent of other devices or an Internet connection. The configuration is read from a microSD card in the device, which also stores all collected data. This also increases data security, as they are only saved locally and not transferred over the Internet.
Extensible
The firmware is open-source, meaning that the source code can be read and extended by anyone. This allows the firmware to grow over time, and enables researchers to independently add the features they need.
T-Watch
Main screen
![Main screen](/sites/default/files/styles/large_522x294/public/Herunterladen_ESM%20Wearable_T-Watch_wei%C3%9Fer%20Hintergrund4000_0.png?h=d1cb525d&itok=Q0rAue7h)
Main screen - questionnaires available
![Main screen - questionnaires available](/sites/default/files/styles/large_522x294/public/Hauptbildschirm%20mit%20verf%C3%BCg.%20Fragebogen_ESM%20Wearable_T-Watch_wei%C3%9Fer%20Hintergrund4000_1.png?h=d1cb525d&itok=zIDweMDh)
T-Watch
Item with Visual Analogue Scale
![Item with Visual Analogue Scale](/sites/default/files/styles/large_522x294/public/Item%20mit%20Likert-Skala_ESM%20Wearable_T-Watch_wei%C3%9Fer%20Hintergrund4000_0.png?h=d1cb525d&itok=30tXc07j)
Item with selection options
![Item with selection options](/sites/default/files/styles/large_522x294/public/Hauptbildschirm%20mit%20verf%C3%BCg.%20Fragebogen_ESM%20Wearable_T-Watch_wei%C3%9Fer%20Hintergrund4000_2.png?h=d1cb525d&itok=XY6M43fs)
T-Watch
Notification
![Notification](/sites/default/files/styles/large_522x294/public/Benachrichtigung_ESM%20Wearable_T-Watch_wei%C3%9Fer%20Hintergrund4000_0.png?h=d1cb525d&itok=tQxfJQCi)
Item with Likert scale
![Item with Likert scale](/sites/default/files/styles/large_522x294/public/Item%20mit%20Likert-Skala_ESM%20Wearable_T-Watch40000.png?h=d1cb525d&itok=FEZKwm6l)
T-Watch
Item with numeric entry
![Item with numeric entry](/sites/default/files/styles/large_522x294/public/Item%20zur%20Zahleneingabe_ESM%20Wearable_T-Watch_wei%C3%9Fer%20Hintergrund4000_6.png?h=d1cb525d&itok=Pl6VuCSJ)