The bracelet
Quiet enough to wear. Steady enough to trust.
A comfortable, professional-grade wrist sensor — built with Polar, who's been making wearable hardware for over forty years.
Why this bracelet
Designed for all-day wear. Built for accuracy.
Comfortable
Soft band, ~22g. Sleep in it. Work out in it. Forget it's there.
Waterproof
5 ATM. Shower, swim, sweat — no need to take it off.
7-day battery
Charges fully in ~90 minutes. Plan one quick top-up per week.
BLE to your phone
Pairs in seconds. Buffers offline — syncs when you're back.
Specifications
The technical detail.
| Sensor | PPI (pulse-to-pulse interval) from PPG · 24/7 heart rate |
| Motion | Accelerometer · 50 Hz · 16-bit · ±8 G |
| Temperature | Skin temperature, continuous |
| Sleep | Stage detection (light, deep, REM) |
| Activity | Step count, energy expenditure |
| Storage | Offline buffering · up to 72 hours |
| Connectivity | BLE 5.x · iOS 16+ / Android 11+ |
| Battery | ~7 days typical · ~90 min full charge |
| Charging | USB-C in the included case |
| Water rating | 5 ATM (50m) |
| Materials | Silicone band · medical-grade sensor |
| Weight | ~22g with band |
In the box
Everything you need to be live in ten minutes.
Wiseheart bracelet
With the silicone band attached.
Charging case
With USB-C cable.
Spare wristband
Two-size, ships in your size choice.
Quick-start card
One-page setup, included.
Compatibility
Pairs with the things you already own.
| iOS | 16 and later |
| Android | 11 and later |
| Apple Watch | watchOS 10+ |
| Mac | macOS 13+ |
| Windows | Windows 11 |
Care
Light upkeep. Rare attention.
Cleaning
Rinse the sensor under warm water once a week. No soap or alcohol on the sensor. The band washes with mild soap.
Charging
About 90 minutes from empty to full. Pick a regular slot — morning shower, evening wind-down.
Battery lifespan
Designed for 500+ full cycles before noticeable capacity drop — roughly three years of weekly charging.
Already own a Polar 360 or Loop?
Subscribe — we'll activate your device.
Skip the bracelet purchase. Sign up for the subscription and we'll add Wiseheart capability to your existing hardware.
For the technically curious
Hardware manual
Full sensor and electrical reference.
Polar SDK reference
The underlying platform the bracelet builds on.
Data export schema
What every field in your data export means.