Woman with NOWATCH
NOWATCH around arm



Cortisol Levels

SPO2 Levels



NOWATCH deconstructed

Biosensing (By EDA)

NOWATCH is the first wearable in the world to offer this uniquely accurate technology to measure and predict stress.

Biosensing (By EDA) is using ElectroDermal Activity or skin conductance to interpret stress. The high dynamic range of skin conductance provides much more detailed insights into current levels of stress, offering awareness and insight into your cognitive zone - something a heart rate based measurement can never do.

NOWATCH Stress app screenshot

Providing actionable insights into stress levels and mental states

In today's distracted world, it's increasingly difficult to stay attuned to your body's signals, particularly around over- or under-stimulation.

NOWATCH’s prediction algorithm can determine your cognitive state or state of mind up to 60 minutes in advance.

The prediction, will give the user time to change his or her behavior for example by taking a walk, taking a break, or by doing some breathing exercises to better cope with the situation.

Picture of skin

Sweat gland activity is directly correlated to stress

Sweat glands are the only organs directly coupled to the sympathetic nervous system, which stimulates the fight-or-flight response to various stressors.

Measuring cortisol contribution through skin conductance in this way is unique and never been done before. It registers the same response to Cortisol contribution when subjected to identical stressors, offering more robust and cleaner measurements and predictions.

The Biosensing (by EDA) technology developed by Philips is translated to a wearable for the first time in this smart sensor.

Only the highest performing sensors

NOWATCH uses an infrared light photoplethysmography (PPG) sensor which reaches deeper than the green light LEDs found in most other wearables. We use this sensor for Heart Rate, Sleep, Activity and other insights.

NOWATCH Heart Rate screenshot

Heart rate

With the PPG sensor we measure a range of factors around your heart rate (HR). Including resting HR and live HR. This serves as an excellent marker of individual changes in cardiovascular fitness.

NOWATCH Activity app screenshot


Understand how your activity affects your life.
Whether you run, walk or dance, we feel your balance.

NOWATCH can automatically recognize when you are walking, running, cycling or other-active and other-non-active activities.

NOWATCH Female Cycle app screenshot


We are using HRV features and motion to determine sleep
The NOWATCH distinguishes the sleep stages (from PPG) and the awake moments (derived from muscle motion).

  • Wake
  • Light Sleep
  • Deep Sleep
  • REM (Rapid Eye Movement)
NOWATCH algorithm determines the hypnogram based on 30 sec interval measurements, similar to clinical polysomnography.


Magnetically interchange the central disc of your NOWATCH to suit your style and mood. Easily switch between beautifully machined stainless steel discs, and prehistoric stones which have existed for hundreds of thousands of years.


  • 37 mm Diameter
  • 10.9 mm thick
  • 18 mm Lug Width


  • Charging every 14 days


  • 30m Depth
  • 3ATM


  • Stainless Steel
  • PVD Coating
  • Ceramic
  • Allergy Free
  • Temperature Resistant


  • Bluetooth Low-Energy Smart
  • EMF-Safe and Allows Airplane Mode

Do you have questions?

If you have any questions please contact us. We will get back to you within 24 hours on business days.


Back to top

Back to top

stay in the loop

By signing up, I agree with the data protection policy of NOWATCH.

Prinsengracht 769

1017 JZ Amsterdam

The Netherlands

Follow us on Instagram:

NOWATCH BV 2022 @ All rights reserved