Hardware Envelope
The leaked listing reveals a dual‑size chassis engineered for ergonomic wrist accommodation. The band integrates a custom 0.9 mm flex PCB substrate populated with a heterogeneous mix of analog front‑ends and digital control logic.
Silicon Stack
At the core resides a sub‑GHz ARM Cortex‑M33 microcontroller fabricated on a 22 nm FD‑SOI process, delivering sub‑10 µA/MHz active power consumption. A dedicated Bluetooth 5.2 radio module operates in the 2.4 GHz ISM band, leveraging adaptive frequency hopping to maintain link integrity under high‑RF noise environments.
Sensor integration includes a tri‑axis MEMS accelerometer, a photoplethysmography (PPG) module with 0.5 mW peak draw, and a capacitive touch matrix calibrated for 120‑240 mm wrist circumferences. The analog front‑ends employ sigma‑delta ADCs with 24‑bit resolution, enabling high‑fidelity biometric capture.
Power Management
Power distribution is orchestrated by an on‑die DC‑DC buck converter with a conversion efficiency of 92 % under typical load. A 150 mAh lithium‑polymer cell supplies up to 14 days of continuous operation, thanks to aggressive duty‑cycling of the radio and sensor subsystems.
Production Timeline
- Form factor sizes: S/M (120‑200 mm), L/XL (145‑240 mm)
- Color options: Black, French Gray
- Estimated shipping window: 4‑5 months from announcement
Firmware Outlook
The device will likely ship with a modular firmware architecture, supporting OTA updates via the BLE stack. Anticipated integration with Garmin Connect will require a proprietary data serialization layer to map raw sensor streams to cloud‑based analytics.
Stay tuned for firmware previews and pre‑order alerts.