Sleep
Your night, stage by stage.
Deep sleep1h 52m
Light sleep4h 58m
Awake0h 51m
Screenless fitness tracker
PRACTS ZERO
Track everything. Subscribe to nothing.
📦 Over 75,000 orders since 2021³
£129.99free UK delivery
- No subscription
- Up to 15 days standby¹
- 25 g
Colour: Black
Red and beige: currently unavailable.
Offer
1× PRACTS ZEROFor you
£129.99
2× PRACTS ZEROFor you and your partner−23% · Save £59.99
£199.99
instead of 2 × £129.99
instead of 2 × £129.99
Band 1
Band 2
Estimated delivery … – …
Over 75,000 orderssince 2021 in the PRACTS shop³ 🙌
- Free UK delivery
- 14-day right to cancel
- No subscription
- Secure checkout
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Your data
You train.
ZERO tracks.
No screen.
HRV
Your HRV, every morning.
Heart rate
Your heart rate. Mid-sprint or asleep.
142bpm
Activity
Every step counts.
9,842steps
Training
Start a workout. See your stats.
Duration32 min
Avg. HR128 bpm
Calories310 kcal
No screen
Nothing lights up. Nothing distracts.
0displays
£0a month
Example values from the HealthWear app · Not a medical device
No subscription
£0
a month. Forever.
Some fitness trackers charge every year: memberships from £169 to £349 a year². ZERO you buy once.
Cost after 3 years
Tracker with membership²from £507
3 × from £169 a year
PRACTS ZERO£129.99
paid once, then £0
After 3 years you save from £377.
PRACTS ZEROSubscription tracker²
Cost£129.99 oncefrom £169 every year
After 3 years£129.99from £507
Nothing to cancel✓✕
² Membership prices of a leading screenless fitness tracker, UK website, checked 20 Oct 2026. Other providers have other prices and terms.
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No screen
No display that lights up. You check the app when you want to.
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Tracks day and night
The optical sensor on the underside measures day and night, even while you sleep.
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Up to 15 days standby¹
Charge it with the magnetic cable and see the battery level in the app. 125 mAh.
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25 g. You barely feel it.
Slim metal frame, woven elastic strap. At night too, and next to your watch.
What ZERO tracks
Eight values. One band.
Everything runs quietly in the background. Each morning you see your values in the free HealthWear app.
- 01Heart rateday and night, even while you sleep
- 02Sleep stageslight, deep, awake and sleep quality
- 03HRVthe variation between two heartbeats
- 04SpO2*an estimate of blood oxygen
- 05Skin temperature*trend at the wrist
- 06Steps & caloriesplus distance and sport modes
- 07Routesvia your smartphone's GPS
- 08Vibration¹a gentle buzz for messages
HealthWear appfreeiPhone & Android
3 steps
That's all it takes.
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1Put it onBand on your wrist, next to your watch if you like. 25 g, you'll barely feel it.
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2ConnectDownload the free HealthWear app and pair the band via Bluetooth. iOS 15 and Android 5.0 or later.
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3Check inEvery morning you see your sleep, heart rate and HRV in the app. No subscription, ever.
Three colours
Find your colour.
Black with an anthracite case; grey and navy with a silver case. Woven, elastic nylon strap. Red and beige are currently unavailable.
Questions
Good to know.
Is the app really free?
Yes. HealthWear is free on the App Store and Google Play. There are no monthly fees for the band or the app.
How accurate are the values?
ZERO measures with an optical sensor on the underside. The values are wellness values for your everyday life and training, not clinical measurements. ZERO is not a medical device and does not replace a visit to your doctor.
Do I need a subscription?
No. You pay once and use the band and the app with no monthly fees. No membership, no minimum term, nothing to cancel.
How long does the battery last?
According to the manufacturer, up to 15 days on standby (125 mAh). In everyday use it depends on which measurements you use and how often you sync. You charge it with the included magnetic cable.
Can I shower or swim with it?
ZERO is splash-resistant: rain and hand-washing are no problem. It is not suitable for swimming. Please take it off for showering, bathing and the sauna.
Does it work with iPhone and Android?
Yes, with Android 5.0 and iOS 15 or later. You connect the band via Bluetooth to the free HealthWear app, available on the App Store and Google Play.
How long does delivery take?
Delivery is free. We process your order within 1–2 working days; delivery then takes 6–10 working days. You'll receive an email with your tracking number.
Can I return it?
Yes. You have a 14-day right to cancel, starting the day you receive your order. Email us at info@practs.de and we'll send you the return address. Return postage is at your cost, unless the item is damaged, faulty or not what you ordered.
Technical specs
- Display
- None
- Measurements
- Heart rate, HRV, sleep, SpO2*, skin temperature trend*, steps, calories, distance
- GPS
- Via your smartphone
- Notifications
- By vibration¹
- Case
- Metal frame, plastic (PC)
- Strap
- Nylon, woven, elastic
- Weight
- 25 g
- Dimensions
- 40.5 × 25 × 9 mm
- Strap length
- 200 mm
- Battery
- 125 mAh, up to 15 days standby¹
- Charging
- Magnetic charging cable
- Connectivity
- Bluetooth
- App
- HealthWear, free (iOS, Android)
- Compatible with
- Android 5.0 and iOS 15 or later
- Water resistance
- Splash-resistant, not for swimming
- Colours
- Black, grey, navy (red and beige currently unavailable)
- In the box
- Band, magnetic charging cable, quick start guide (2 bands and 2 cables in the 2-pack)
Buy once. Use forever.
PRACTS ZERO in Black, £129.99. No subscription.
Over 75,000 orderssince 2021 in the PRACTS shop³ 🙌
* Wellness value. Not a medical device. The values are for general well-being, not for diagnosis or treatment.
¹ Manufacturer's figure. Actual battery life depends on use and settings.
³ Orders in the PRACTS online shop from 2021 to October 2026, all products and countries.
Some people in the images were created with AI. The band shown is the product you receive.