| Type | Screenless wearable training system (arm-worn heart-rate sensor plus waist-worn motion sensor), no display | — |
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| Sensors | Helio Core Motion HR: BioTracker 6.0 PPG optical heart-rate sensor (5PD + 2LED), accelerometer, gyroscope, temperature sensor, geomagnetic sensor. Helio Core Motion Waist: accelerometer, gyroscope, geomagnetic sensor | — |
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| Battery | Up to 11 days typical (Helio Core Motion HR), up to 40 days typical (Helio Core Motion Waist), 232 mAh cells, magnetic charger | Up to 10 days |
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| Water Resistance | 5 ATM | 5 ATM (swim) |
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| Connectivity | Bluetooth 5.2 (BLE) | Bluetooth, ANT+; connected GPS via smartphone |
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| Weight | 11.4 g (Helio Core Motion HR), 10.7 g (Helio Core Motion Waist) | — |
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| Sports Modes | More than 50 sports modes via the Zepp App, HYROX Race and Simulation support | — |
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| Compatibility | Android 8.0 and above, iOS 17.0 and above via the Zepp App; HYROX modes require Amazfit Balance 3 or Balance Ultra at launch | iPhone and Android |
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| In the Box | Helio Core Motion HR, Helio Core Motion Waist, Helio Pro Clip, wristband, armband, magnetic charging head | — |
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| Subscription | No monthly subscription required | No subscription required for core tracking; some coaching and workout features require Garmin Connect+ |
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| Display | — | None (screen-free); single side button, data viewed in Garmin Connect app |
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| Body | — | Module 27 x 47 x 9 mm, 14.8 g; fabric ComfortFit band, fiber-reinforced polymer case; total 20.7 g (S-M) / 21.2 g (L-XL) |
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| Charging | — | Garmin proprietary plug charger (lithium-ion battery) |
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| Memory | — | 128 MB history |
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| Health Sensors | — | Wrist heart rate, Pulse Ox, skin temperature, Body Battery, stress, respiration, sleep tracking |
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| Training Metrics | — | Training readiness, HRV status, VO2 max, training status, workout benefit, recovery time; 80+ manual activities and automatic activity detection |
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| Colors | — | Citron Gray, Mauve, French Gray, Dark Olive, Captain Blue, French Blue, Black |
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