Technical specifications
From Teltonika Telemedic Wiki
Technical specifications
Body
| 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 |
Display
| 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 |
Memory
| Capacity | 128 Mb |
Connectivity
| Bluetooth version | 5.3 |
| Remote access | Cloud |
| Operating frequency | 2402 – 2480 MHz |
| Max. output power | 3 dBm |
Features
| ECG sensors for electrocardiogram | PPG sensors for AFib detection |
| Heart rate monitoring (when inactive) | Low / High heart rate alerts |
| Cloud-based firmware updates, Bluetooth configuration | Water resistant: 1 m for 30 min — IP67 |
| SpO2: 70–100%; ±4% (excluding high motion artifacts and low perfusion cases) | |
Power supply
| Battery | Built-in Li-Po 410 mAh / 1.56 Wh (non-replaceable) |
| Charging voltage | 5 V ⎓ |
| Operating voltage | Internal: 3.8 V ⎓ · External: 5 V ⎓ |
| Max. input current | 0.5 A |
Sensors & components
| Accelerometer | Gyroscope |
Buttons
| Side button | Turn on, Restart, Back |
Straps
| 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.
Supported peripherals
| 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.
Conditions for use
| 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 |