NOWATCH is now Polsen Health. Read the story
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Flagship Store

Prinsengracht 455
1016 HN Amsterdam
The Netherlands

Headquarters

Anjeliersstraat 470A
1015 NL Amsterdam
The Netherlands

NOWATCH BV.
KVK: 77816889

NOWATCH BV 2026 @ All rights reserved

NOWATCH B Gold Black Sport 36mm

by Polsen

$499

(duty & taxes included)

Trusted by

Your daily health guardian.

A continuous, minute-by-minute timeline of how your body responds to every demand of the day — stress, physical activity, and rest. Built on unique stress metrics no other consumer wearable captures, it measures how often your body spikes, how long it stays under stress, and how quickly it returns to balance — so you always know where your load stands and when to adjust your day.

Polsen app – Live Reactivity Monitor™Polsen app – Every health pillar, in one placePolsen app – Embedded toolkit to build adaptabilityPolsen app – Actionable insights when they matter

How we compare

Continuous precision.
Deeper insights.

Every dimension of your health, in one place.

Stress, sleep, activity, heart health, feelings, cycle, and more — because each one shapes the others. Every metric is available in real time and over time, so you can spot what’s happening today and catch what’s building before it becomes harder to reverse.
Prolonged stress vibration

Prolonged stress vibration

When your body has been under stress for an extended period, your watch vibrates gently — a quiet nudge to pause, identify what's driving it, and reset with built-in Check-ins and breathing exercises.

Daily stress load

Daily stress load

Based on how long your body stayed under physiological stress, how often it spiked, and how quickly it recovered, Polsen watches give you a daily read of how you're handling daily demands — from High Resilience to High Load or Delayed Recovery.

Cumulative stress duration

Cumulative stress duration

Your Overview tracks how much time your body has spent under stress week on week — so you can see whether your load is staying manageable or quietly building over time.

Cumulative stress recovery & frequency

Cumulative stress recovery & frequency

Alongside duration, your Overview shows how your recovery speed and stress frequency are trending — revealing whether your body is getting better at bouncing back, or showing early signs of strain.

Real people.
Real results.

Alex sharing their Polsen experience

Alex sharing their Polsen experience

“It’s the health tracker I wanted from my Apple Watch”

Alex · Student

Lori sharing their Polsen experience

Lori sharing their Polsen experience

“It won’t distract you from whatever you’re doing by beeping”

Lori · Yoga Teacher

DJ Paris sharing their Polsen experience

DJ Paris sharing their Polsen experience

“I can use it to conserve energy, as opposed to being so activated”

DJ Paris · Sales Director

Amy sharing their Polsen experience

Amy sharing their Polsen experience

“It’s made me be able to advocate for myself better”

Amy · Corporate Secretary

Juliette sharing their Polsen experience

Juliette sharing their Polsen experience

“It gave me my sense of confidence back”

Juliette · Project Manager

Your first 10 days

From the moment it meets your wrist to your first weeks in, here’s what you can expect from the beginning of your journey with Polsen.

Instant tracking

Instant tracking

The second you start wearing your Polsen watch, the sensors begin tracking your body. You’ll instantly see vitals like heart rate, steps, and motion in your NOW tab. The following morning, you’ll be able to view your sleep data from the night before.

Instant tracking

Instant tracking

The second you start wearing your Polsen watch, the sensors begin tracking your body. You’ll instantly see vitals like heart rate, steps, and motion in your NOW tab. The following morning, you’ll be able to view your sleep data from the night before.

What’s in the box

Case

Case

Your watch will come in a 36mm stainless steel case with Panda Glass.

Sport Rubber Strap

Sport Rubber Strap

Made from premium fluoroelastomer, highly durable, heat and UV resistant, hypoallergenic, slightly elastic for all-day comfort, sweat and water-resistant.

Charger

Charger

Charging dock and USB-C charging cable.

Subscription-free App

Subscription-free App

Scan the QR code inside the box to download the Polsen App and see how your body responds to daily demands in real time.

We’re here to help. Everything you need to know.

NOWATCH B

36mm case size
36mm case size
36mm case size
36mm case size
36mm case size
36mm case size
36mm case size
Our best-selling model: advanced health tracking in a lightweight design.

NOWATCH B Gold Black Sport 36mm

by Polsen

$499

(duty & taxes included)

Our best-selling model: advanced health tracking in a lightweight design.

Finish - Gold

Strap - Black Sport

Black Woven strapBeige Woven strapBlack Sport strapWhite Sport strap

Select size

Includes subscription-free app

High precision stress & load tracking
Subscription-free app
100% secure health data
Swim-proof & shower-safe
Up to 5 days battery life

What we measure

Stress Response

  • Stress response detection
  • Stress frequency (number of stress events)
  • Stress duration

Recovery Indicators

  • Stress Recovery (average time to return to homeostasis after stressor)
  • HRV (at night)

Sleep

  • Sleep stages and duration
  • Awakening stage
  • Times awake
  • Sleep Latency
  • Sleep Restoration
  • Sleep Regularity

Heart Health

Try for free for 30 days
100% money back guarantee
Free & fast delivery
Free returns

Other Health Trackers

vs

Daily & cumulative load: the earliest signal of health risk most trackers miss

Metrics tracked in isolation, no picture of what's quietly accumulating

Reactivity Monitor™: a minute-by-minute timeline of how your body responds to daily demands

Data sampled every few minutes

Quiet when you're well, speaks only when it matters

Always-on nudges & notifications

No scores, no streaks, no addictive loops

Dopamine-driven engagement

Subscription-free, forever

From $71–$359/yr

Privacy-first, opted out by default

Opaque data practices

Looks like jewelry, works like a health tracker

Looks like a tracker, feels like one too

See the full comparisonvs Oura, Apple Watch, WHOOP

Continuous Heart Rate (minute-by-minute timeline)
  • Resting Heart Rate
  • Temperature

    • Skin temperature deviations (at night)

    Women's Health

    • Menstrual cycle tracking

    Activity

    • Steps
    • Intense Active Minutes
    • Automatic detection of physical activity
    • Workout summary: HR zones, map

    Details

    Size

    • 36mm stainless steel case
    • 10.9mm thick
    • 16mm lug width

    Battery

    • Up to 5 days of battery life
    • Powered by High Data Density Mode: second-by-second monitoring of key vitals for highly accurate stress and recovery tracking

    Water resistance

    50m / 164ft depth (5ATM)

    Materials

    • Stainless Steel
    • Panda Glass
    • Hypoallergenic
    • Temperature Resistant

    Connectivity

    • Bluetooth Low-Energy Smart
    • EMF-Safe

    How does it work?

    Polsen watches are powered by research-grade sensors that track your body’s responses 24/7. Using advanced PPG to measure heart rate and motion sensors to detect activity, they calibrate your personal baseline to power your Reactivity Monitor™ timeline—showing stress patterns, sleep restoration, and movement data in real time.

    Delivery & Returns

    We aim to fulfill orders within 2 business days of purchase. Delivery times vary by location, with typical times as follows:

    Benelux

    Next Business Day

    EU & EEA

    2-4 Business Days

    Switzerland

    Up to 4 Business Days

    North America

    Up to 5 Business Days

    Once your package is shipped, you will receive an email and tracking code.