Name: Research Ring
Height 1.68 in. 42.7 mm
Width 1.26 in. 32.2 mm
Depth 0.44 in. 11.4 mm
Weight 0.32 oz. 9 g
Finger Size Range:
6 to 13 US (52 to 70 EU) with interchangeable shims
Housing material & shims:
Teijin Panlite polycarbonate, certified ISO10993 for biocompatibility and rated UL94-V0
Stainless Steel 430 with nickel and gold plating
Sensor 1: PPG
Metric: Heart Rate - optical
Maximum Sampling Rate: 400 Hz*
Sensor 2: EDA
Description: Electrodermal Activity
Metric: Skin Conductance (µSiemens)
Maximum Sampling Rate: 400 Hz*
Sensor 3: ECG
Metric: Heart Rate - electrical
Maximum Sampling Rate: 800 Hz*
Sensor 4: Temp
Description: Body Temperature
Metric: Celsius or Fahreinheit
Maximum Sampling Rate: 20 Hz*
Sensor 5: Motion
Maximum Sampling Rate: 100 Hz*
*Not all sampling rates may be run concurrently. Refer to the Senstream App for defined settings.
**Actigraphy using the Research Ring's IMU is under development.
BLE: Bluetooth Low-Energy (Class B digital device pursuant to part 15 of the FCC Rules)
Firmware: Automatic firmware updates available w/Senstream iOS App (15.2 or later)
Cloud (charts.senstream.com): Senstream's mobile application can automatically upload your data to the Senstream cloud application for storage, analysis, downloading or connection to other cloud solutions through an API
Run time: Can exceed 8 hours depending on channels used and sampling rates
Charge time: 2 hours to completely charge completely depleted device
Charge cable: USB-A charge cable with custom magnetic coupling (USB power adapter not included)
The Research Ring by Senstream is a revolutionary research platform that enables the capture of high-quality data from numerous physiological signals on a single, small, user-friendly device. Research-grade in a friendly consumer form factor, the Research Ring collects electrodermal activity (EDA, aka GSR) data, pulse (with an optical sensor), electrocardiogram (ECG), and temperature.
The ring allows researchers to gather physiological and other data “in the wild,” in everyday settings with their study participants. This has generally not been feasible because data acquisition hardware and software has historically required large, computer-connected signal acquisition systems, and lab-friendly (but not user-friendly) systems, cables, sensors and software. While more portable systems have evolved, the problem with many of them is that they do not capture high quality data that researchers can use for peer-reviewed studies.
The Senstream Research Ring is a product that gives researchers new possibilities. If the researcher wants to study a user’s psychophysiological and other contextual data, they can give the Research Ring to a study participant along with a companion mobile application. This “mobile first” approach is also cloud-friendly. The data is collected on the phone and can be immediately stored on the cloud when a data collection session ends.
In addition to being a stand-alone research tool the Senstream Research Ring can also be synchronized with AcqKnowledge (BIOPAC’s data acquisition and analysis tool) in real time or imported into AcqKnowledge asynchronously from the mobile application