Version 4
NovaWatchOS
Time, health and intent — on your wrist.
NovaWatchOS is the operating system designed for the Tempo Watch and Tempo Watch S — glanceable, gentle on battery and tuned for the always-on AMOLED display.
Features & functionalities
Built around how you use it.
Always-on AMOLED interface with adaptive brightness
Complication-rich watch faces, fully customisable
Workout coach with 80+ activities and live metrics
Sleep, stress, HRV and recovery tracking
ECG, AFib detection, SpO₂ and skin temperature
On-wrist NovaAI assistant with voice replies
Cellular calls, music and contactless pay
Crash & fall detection with SOS
Why it matters
Built for the AMOLED display.
Deep blacks, vivid faces and tuned animations that sip battery instead of draining it.
Why it matters
Health, gently in the background.
Continuous heart, oxygen and temperature tracking — no buttons to press, no spreadsheets to read.
Why it matters
Made for both Tempo Watches.
Same calm experience on the aluminum Tempo Watch and the titanium Tempo Watch S — tuned per chip and per sensor array.
Software specifications
Under the hood.
Every layer of NovaWatchOS — from the kernel to the AI engine — engineered to feel calm, fast and quietly precise.
System
Version 4- Kernel
- NovaKernel 7 Wear (real-time, ultra-low-power)
- Latest build
- 4.1.0 — April 2026
- Architecture
- ARM64 (Nova W-series)
- Min. RAM
- 1 GB
- Install size
- 3.4 GB
- App framework
- FlowKit Wear 4
- Display engine
- Always-on AMOLED, adaptive 1–60 Hz
- On-device AI
- NovaIntelligence Wear — 4 TOPS class
- Health sensors
- HR, SpO₂, ECG, skin temp, HRV, depth
- Connectivity
- LTE eSIM, Wi-Fi 6, BT 5.4, UWB, dual-band GPS
- Battery tuning
- Up to 96 h with low-power scheduler
- Updates
- 5 years of OS updates included
