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Technical specifications
| Dimensions (W × L × H)
|
40.5 × 47 × 14.7 mm (1.6" × 1.9" × 0.6")
|
| Weight
|
52 g
|
| Main CPU
|
nRF5340 — 2× ARM Cortex M33 cores (application + network)
|
| Platform (OS)
|
Zephyr RTOS
|
| Type
|
LCD TFT
|
| Size
|
1.3"
|
| Resolution
|
240 × 240 px
|
| Brightness
|
250 NITS
|
| Cover lens
|
Corning Gorilla Glass 3
|
| Surface hardness
|
>8 H
|
| Display area
|
547.56 sq mm
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| Bluetooth version
|
5.3
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| Remote access
|
Cloud
|
| Operating frequency
|
2402 – 2480 MHz
|
| Max. output power
|
3 dBm
|
| ECG sensors for electrocardiogram
|
PPG sensors for AFib detection
|
| Heart rate monitoring (when inactive)
|
Low / High heart rate alerts
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| Cloud-based firmware updates, Bluetooth configuration
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Water resistant: 1 m for 30 min — IP67
|
| SpO2: 70–100%; ±4% (excluding high motion artifacts and low perfusion cases)
|
| Battery
|
Built-in Li-Po 410 mAh / 1.56 Wh (non-replaceable)
|
| Charging voltage
|
5 V ⎓
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| Operating voltage
|
Internal: 3.8 V ⎓ · External: 5 V ⎓
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| Max. input current
|
0.5 A
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| Side button
|
Turn on, Restart, Back
|
| Material
|
Silicone rubber with integrated stainless-steel electrode
|
| Size S
|
Fits wrist 14–20 cm
|
| Size M
|
Fits wrist 16.5–22 cm
|
| Size L
|
Fits wrist 19–24.5 cm
|
* Strap size depends on the purchased set.
| Accessory
|
TeltoHeart charging dock
|
| Wall charger compatibility
|
Any CE-marked 5 V⎓/1A charger with USB Type-A connector
|
| Cable compatibility
|
Any CE-certified USB-A to USB-C cable
|
| Android
|
Android 10 or later with Google Play Services
|
| iOS
|
iOS 14 or later
|
| Bluetooth compatibility
|
Bluetooth v5.0+ in 2.4 GHz band with SMP protocol
|
⚠ MRI / CT: Compatibility with MRI or CT was not checked. Use of this device in an MRI or CT environment is prohibited.
| Operating temperature
|
−10 to +45 °C
|
| Charging temperature
|
0 to +45 °C
|
| Storage temperature (1 month)
|
−20 to +35 °C
|
| Storage temperature (6 months)
|
−20 to +30 °C
|
| Humidity (extreme low / high)
|
15% / 90%
|
| Atmospheric pressure (extreme low / high)
|
700 hPa / 1060 hPa
|
PPG / ECG measurement specifications
| PPG function
|
Continuous heart rhythm and atrial fibrillation monitoring
|
| ECG features
|
6-lead Electrocardiogram
|
| ECG electrode locations
|
Bottom surface · Top surface · Wrist strap
|
| ECG electrodes
|
Lead I and Lead III directly measured; Lead II, aVL, aVR, aVF calculated
|
| AFib method
|
Non-invasive — PPG (Bio-optical sensing) + 6-lead ECG
|
| Heart rate range
|
40–200 BPM
|
| Heart rate accuracy
|
±5 BPM
|
