• CONTINUOS HEART RATE MONITORING 
•  CALORIES
•  ACTIVITY
•  SLEEPTRAK
•  APP CONNECTED
• NO RECHARGING

• Continuous Heart Rate via chest belt (belt sold separately)
  
  Don’t overtrain; don’t undertrain. Stay in the zone whether you’re working out or catching up on sleep.
  • Stream and record heart rate readings with a Bluetooth chest strap.
  • Receive data right on your LifeTrak Zone R420 activity tracker.
  • Workout without your mobile device and transfer data later for maximum convenience.

• ECG Accurate Heart Rate finger touch via push button
  
  No chest strap? No worries. Keep your intensity in the right zone at the touch of a button.

• Check your heart rate with a simple touch of a button.

• View your ECG wave reference and percent of max heart rate right on your display.

• Store multiple measurements for deeper insight and a long-term view of your progress.

Heart Rate Zone Analysis via LifeTrak app

Think long-term and turn data into results with app connectivity.

• Record continuous heart rate readings via your Bluetooth chest strap (sold separately).

• Review your heart rate zone in the LifeTrak app after your workout.

App Compatability*

Think long term. View detailed charts. Review more than a year of data.

• Store all your data, get deeper insight and view long term trends using the LifeTrak app.

• Transfer data from the Zone R420 to your compatible Smartphone and tablets with a push of a button.

• Compatible with LifeTrak, Apple Health and Google Fit apps

Automatic Sleep Tracking

Rest easy. Automatic sleep and wake detection. Monitors sleep quality.

• Rest easy without needing to tell the Zone R420 you’re going to sleep or waking up.

• Review your sleep quality data to help you improve your night’s rest.

• Zone R420 monitors your sleep quality and quantity.

Precise Activity Tracking

Know your numbers. Automatically tracks all day calorie burn, steps, distance and workouts. Stores data up to seven days on wrist.

• Step Count & Distance Calculation

• Get a better picture of your progress with accurate step count and distance measurement.

• Uses a 50-60 step buffer to filter out false steps by making sure you are really walking, before updating the count.

• Adjusts to walking, jogging, or running through a patented pace-based algorithm.

Track Calories Burned

Get all day calorie burn stats for a more accurate picture of your progress. Automatically calculates calorie burn using heart rate readings and daily activity.

No Recharging Needed

Wear it anytime and anywhere without recharging. No Charging; typical one-year battery life with standard coin cell.

30M Water Resistant

Water resistant to 30 meters (90 feet).

Reversible & Interchangeable ComfortFit Band

Personalize to your style. Reversible/interchangeable bands and additional colors available.