Why Modular How It Works Data Intelligence FAQs

Are you running two devices
to do one job?

Your GPS watch handles training.
Your health tracker handles
recovery. They never talk to each
other.

The full sport watch. When you need it.
Attach the Dial to the Band and it becomes a complete GPS sport watch. Built for the run, the trail, and everything in between.
The health tracker. Always there.
Remove the Dial and the Band stays on your wrist — 9.9g, skin-thin, tracking continuously. Heart rate, HRV, sleep. No gaps. No bulk.
The full sport watch. When you need it.
Attach the Dial to the Band and it becomes a complete GPS sport watch. Built for the run, the trail, and everything in between.
The health tracker. Always there.
Remove the Dial and the Band stays on your wrist — 9.9g, skin-thin, tracking continuously. Heart rate, HRV, sleep. No gaps. No bulk.
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Dual-Band GNSS
Two satellite frequencies. One accurate position. Even under tree cover, in urban canyons, or on technical trails. Your route data reflects where you actually ran.
15-Day Battery Life
A week of training, travel, and recovery without touching a charger. Designed for athletes who don't want battery anxiety factoring into their plans.
Glance-Safe AMOLED Display
High contrast. Sunlight-readable. Your pace, heart rate zone, and navigation data at a glance, without breaking stride or squinting into the sun.
Built for the elements
Rain, sweat, open water. Watch 01 handles the conditions that come with outdoor training — not just the ones on a spec sheet.
Dual-Band GNSS
Two satellite frequencies. One accurate position. Even under tree cover, in urban canyons, or on technical trails. Your route data reflects where you actually ran.
15-Day Battery Life
A week of training, travel, and recovery without touching a charger. Designed for athletes who don't want battery anxiety factoring into their plans.
Glance-Safe AMOLED Display
High contrast. Sunlight-readable. Your pace, heart rate zone, and navigation data at a glance, without breaking stride or squinting into the sun.
Built for the elements
Rain, sweat, open water. Watch 01 handles the conditions that come with outdoor training — not just the ones on a spec sheet.
01 / 04
9.9g Ultra-Light
Lighter than most rings. You stop noticing it within hours. Sleep data, HRV trends, and resting heart rate only mean something if the device stays on.
Ultra-Thin Design
Designed to sit flush against the wrist. No edge catching on a sleeve. No pressure point interrupting sleep. Precision monitoring without the bulk.
Precise HR + HRV
Heart rate and heart rate variability tracked continuously, 24x7. The overnight HRV data is what tells you whether your body is absorbing the training or just accumulating it.
Up to 5-Day Battery
A full week of uninterrupted tracking. One less thing to think about between training blocks.
No monthly fee
Your health data belongs to you. MossCode doesn't lock insights behind a paywall.
9.9g Ultra-Light
Lighter than most rings. You stop noticing it within hours. Sleep data, HRV trends, and resting heart rate only mean something if the device stays on.
Ultra-Thin Design
Designed to sit flush against the wrist. No edge catching on a sleeve. No pressure point interrupting sleep. Precision monitoring without the bulk.
Precise HR + HRV
Heart rate and heart rate variability tracked continuously, 24x7. The overnight HRV data is what tells you whether your body is absorbing the training or just accumulating it.
Up to 5-Day Battery
A full week of uninterrupted tracking. One less thing to think about between training blocks.
No monthly fee
Your health data belongs to you. MossCode doesn't lock insights behind a paywall.
01 / 05

Where Training Meets Recovery

MossCode App answers the question that actually matters: what should I do today?

Know exactly where your fitness stands.
MossCode builds a Fitness Capability Profile across the metrics that define running performance. It maps the full picture of your athletic capacity, so you can train with specificity rather than guesswork.
  • Fitness Tier
  • Fatigue Resistance
  • Pace Curve
  • Running Recovery
  • Running Economy
The data between sessions is where adaptation happens.
Training stress is visible. Recovery is the part most athletes can't see clearly. Watch 01 monitors the signals that tell you whether your body is ready — or not.
  • Resting Heart Rate
  • Overnight HRV
  • Sleep Efficiency
  • Smart Recovery Alarm
Know exactly where your fitness stands.
MossCode builds a Fitness Capability Profile across the metrics that define running performance. It maps the full picture of your athletic capacity, so you can train with specificity rather than guesswork.
  • Fitness Tier
  • Fatigue Resistance
  • Pace Curve
  • Running Recovery
  • Running Economy
The data between sessions is where adaptation happens.
Training stress is visible. Recovery is the part most athletes can't see clearly. Watch 01 monitors the signals that tell you whether your body is ready — or not.
  • Resting Heart Rate
  • Overnight HRV
  • Sleep Efficiency
  • Smart Recovery Alarm
01 / 02

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Why Pushing Harder Is Making You Slower: A Hybrid Athlete's Guide to Recovery

Performance plateaus for hybrid athletes aren't caused by a lack of effort, but by a "recovery debt" that traditional wearables fail to track due to nighttime charging blackouts. This article explores the biological interference effect between strength and endurance training, and introduces how MossCode’s modular design provides 24/7 uninterrupted HRV and sleep architecture data to help athletes accurately balance training load and recovery.

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Sports Watch vs Fitness Tracker — Why Hybrid Athletes End Up Wearing Both

Most hybrid athletes run two devices — a sports watch for training, a fitness tracker for sleep and recovery. The problem isn't the data. It's the gaps: sleep blind spots when the watch charges overnight, fragmented HRV baselines, and two apps that can't talk to each other. This guide breaks down what each device actually optimizes for, why hybrid athletes can't skip either data stream, and how a modular Band-and-Dial setup collapses both jobs into one continuous record — no charging windows, no split ecosystems, no seam in your data.

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Do You Only Have One VO2 Max? The Truth Is, You Have One Per Sport

VO2 Max is not a single, fixed metric; it is sport-specific. Because different sports recruit different amounts of muscle mass, your VO2 Max for cycling will naturally differ from your running baseline. Mainstream sports watches fail multi-sport athletes by blending all activities into one inaccurate number, causing data contamination. This article explains the physiological science behind sport-specific VO2 Max and introduces the MossCode Watch 01—a modular wearable system that tracks precise physiological data and provides independent VO2 Max trend lines for each sport, allowing hybrid athletes to finally see their true progress.

Learn More

FAQs

What is Watch 01, in plain terms?

Watch 01 is a modular sports watch system built for training and daily health tracking—designed to stay on your body more consistently, with a setup that adapts across activities.

Can I use Watch 01 primarily as a running watch (not cycling)?

Yes. With the Dial and Band combined, it works as a professional outdoor running watch and records advanced running performance metrics such as Pace Curve, Running Economy, Fatigue Resistance, and Running Recovery.

How does the watch know what sport I’m doing—do I have to start workouts manually?

Watch 01 supports Automatic Activity Detection by analyzing two signal streams in the background: IMU motion data (accelerometer + gyroscope) and heart rate. It monitors these signals together over a 10-minute window; if the pattern matches a known activity profile, it prompts you to confirm (or correct) the detected sport before it starts logging.At launch it supports running, swimming, cycling, elliptical, boxing, hiking, and strength training—with more to follow.

Do you support iPhone? Does it sync with Apple Health?

Yes. Apple Health is our primary iPhone integration. MossCode data—including biometrics like HR, HRV, sleep, plus activity data like steps, speed, distance, and elevation—flows into Apple Health. That makes your training and health data available to any iOS app that reads from Apple Health.

Can the watch show texts and calls? What about emails?

Watch 01 supports incoming call and SMS notifications on your wrist, including caller info and text content on the Dial. Email retrieval is not supported at launch. Watch 01 is built as a performance sports watch first, focused on training metrics and navigation rather than full email syncing.

Does it track VO2 Max, cadence, and elevation gain?

Yes. Watch 01 records VO2 Max across different sports, with launch support for VO2 Max in running and cycling. For running, it automatically records cadence and elevation gain. For cycling, it automatically records elevation gain, but cadence requires an external ANT+ cadence sensor or power meter.

Does it measure blood pressure?

Not at this time. Watch 01 uses an optical PPG sensor, and cuffless blood pressure is not yet reliable enough for values you could safely use for health decisions.Watch 01 does track core metrics for training and recovery, including heart rate (100 Hz), HRV, SpO2, and respiration.

Will it track swim workouts? How accurate is heart rate while swimming?

It can track swim workouts, but heart-rate readings during swimming may be limited—water and motion can interfere with optical wrist sensors (this is a known limitation across optical HR monitors, not just ours). If swim HR accuracy is critical, we recommend pairing with a BLE/ANT+ chest strap.

Can I upload/import GPX coordinates or points?

Yes, with a simple workflow: if a GPX coordinate hasn’t been saved before, enter it in the MossCode app and save it as a Point of Interest (POI). Once saved, the POI is available for use on both your phone and your watch.

Can it handle a 24+ hour race (like a 100-mile ultra)?

Yes—battery depends on your settings. In Normal mode, if you keep always-on display enabled and run offline map navigation continuously, the watch supports high-frequency sampling (GNSS 10 Hz with 1-second output; PPG 100 Hz in 1-second windows) and delivers up to 25 hours of battery life in that configuration. If you don’t need always-on display plus continuous navigation, it can last up to 15 days on a single charge.

My smart watch already does the same thing—why switch?

A Smart watch is genuinely great for fitness tracking. Watch 01 is built around two specific gaps that show up when you want training clarity and consistent health data:First, visibility during movement: with a wrist-worn watch, you still have to lift and rotate your arm to check data or navigation. Watch 01’s modular design lets you keep data in a more glanceable position when needed.Second, continuity: traditional smartwatches stop tracking when they’re off your body to charge. Watch 01’s modular system is designed to reduce those “missing data” windows so you can keep health tracking more consistent.

Disclaimer

• GPS accuracy may vary depending on environmental conditions, satellite availability, and signal obstructions. Dual-band GNSS improves accuracy but does not guarantee error-free positioning in all conditions.

• MossCode Watch is not a medical device. Heart rate, HRV, sleep, and other biometric data are intended for fitness and wellness purposes only and should not be used for medical diagnosis or treatment.

• Battery life varies by usage, settings, and environmental conditions. The power transfer efficiency (≥80%) is measured under standard test conditions; actual results may vary.

• Sensor compatibility (ANT+ / BLE) depends on third-party device protocols.

• Garmin-compatible mount refers to standard quarter-turn interface; compatibility with other third-party mounts is not guaranteed.

• Only early adopters of MossCode Watch 01 have no subscription fees for MossCode App.

• Images are for illustration only; the actual product may differ.