Peak Window
Not every hour of the day is equally suited to high-intensity performance. See when your core body temperature trend and circadian rhythm may be better aligned with higher-intensity training.
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Speediance Strap
Performance Starts Inside.
$159.00
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Key Features
- Core Body Temperature: A deeper dimension of health and fitness tracking.
- No Subscription Required: Core tracking included. Plus 1 year of Wellness Go.
- From Data to Guidance: Turn daily insights into clear next steps.
- Recovery, Sleep & Cardio Load: Understand your recovery, rhythm, and effort.
- Made to Disappear: Just 21g for Pro in titanium. 28g for standard in stainless steel.
- Up to 14 Days of Battery Life: Ready for the long run.
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Services and Benefits
Estimated to Ship in Early October
30-Day Returns
1-Year Warranty
Payment Methods
Speediance Strap
$159.00
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Get Highlights
*Based on typical use with 30 minutes of exercise per day. Actual battery life may vary with temperature and humidity.
*Based on typical use with 30 minutes of exercise per day. Actual battery life may vary with temperature and humidity.
A Deeper Signal, Straight from Your Core
Skin temperature reflects the surface, core body temperature reveals the heat trend within. By combining heat-flux sensing, skin temperature, and physiological modeling, Speediance Strap adds deeper context to how your body responds to training, heat, recovery, and sleep.
*Developed by Swiss thermal sensing company greenteg's Calera® core body temperature technology.
Warm-Up Readiness
Sweating does not always mean your body is prepared for higher output. Follow your temperature response to understand when to continue warming up or progress.
Heat Load Monitoring
Feeling hotter does not always mean you are training better. See when heat load is rising and when it may be appropriate to adjust pace, recovery, or hydration.
Peak Window
Not every hour of the day is equally suited to high-intensity performance. See when your core body temperature trend and circadian rhythm may be better aligned with higher-intensity training.
Warm-Up Readiness
Sweating does not always mean your body is prepared for higher output. Follow your temperature response to understand when to continue warming up or progress.
Heat Load Monitoring
Feeling hotter does not always mean you are training better. See when heat load is rising and when it may be appropriate to adjust pace, recovery, or hydration.
From Data to Guidance
Cardio Load
See both sides of your training load. See how endurance training affects your body with heart-rate intensity from Strap.
Real-Time Guidance
Know what to do next. At key moments, Speediance weighs your recovery, heart rate, HRV, estimated core temperature, and recent load—then helps you decide whether to push, adjust, or recover.
Goal-Based Adaptive Plan
Turn goals into daily action. Set a goal and follow a plan that adapts to your recovery, completed sessions, and progress.
Deeper into Sleep.
Sleep Deeper.
*Core Body Temperature
Core Body Temperature follows a daily rhythm and typically begins to decline as the body moves toward sleep. Speediance Strap follows your personal temperature trend to add context to when you may be better prepared to wind down.
*Core Body Temperature
Core Body Temperature follows a daily rhythm and typically begins to decline as the body moves toward sleep. Speediance Strap follows your personal temperature trend to add context to when you may be better prepared to wind down.
*Core Body Temperature
Core Body Temperature follows a daily rhythm and typically begins to decline as the body moves toward sleep. Speediance Strap follows your personal temperature trend to add context to when you may be better prepared to wind down.
*Core Body Temperature
Core Body Temperature follows a daily rhythm and typically begins to decline as the body moves toward sleep. Speediance Strap follows your personal temperature trend to add context to when you may be better prepared to wind down.
Everything,
And Everything Else About Your Body.
Heart Rate Zones
Train at the right intensity with zones tailored to your body.
HRV (Heart Rate Variability)
Track recovery status and how well your body adapts to stress.
VO₂ Max Estimation
Estimate your aerobic fitness and follow how it changes over time.
Blood Oxygen (SpO₂)
Track oxygen saturation trends during rest and sleep.
Stress
Continuously track stress levels and long-term trends.
Wellness Age
Wellness Age reveals how your daily habits influence your long-term health and offers personalized guidance to help you make healthier choices.
Menstrual Cycle Tracking
Track your menstrual cycle and adjust your training to match how your body feels throughout each phase.
Stay Ahead of Health Signals
Identify early signs of fatigue, lowered resilience, or overtraining so you can respond before it affects your performance.
Calorie Tracking
Snap a photo of your meal to automatically track calories, helping you easily keep an eye on your nutrition.
Calorie Deficit
Support a calorie deficit by calculating your intake based on your goals and creating a personalized meal plan.
Micronutrient Insights
Track your micronutrients through long-term eating habits, helping spot nutritional gaps and maintain a balanced diet.
Sleep Score
Measure sleep quality using core body temperature, heart rate, and sleep stages to show how restorative your sleep really was.
Smarter Bedtime Guidance
Get personalized suggestions for when to sleep based on your rhythm, core body temperature, load, and stress.
Complete Sleep Tracking
Track how long and how well you sleep, including overall sleep consistency and patterns.
Sleep Debt Insights
Show how much sleep your body has missed and what you need to fully recover and stay energized.
Automatic Activity Tracking
Automatically track everyday movement, from steps to workouts.
Multi-Sport Modes
Choose your sport and capture each session with the right context.
Cardio Load
See how your cardio training adds up, using heart-rate intensity to show its impact on your body.
Daily Recovery Score
See how recent load, sleep, stress, estimated core temperature, and your personal baseline come together.
Peak Window
Find your optimal time of day for high-intensity performance.
Naturally
Fit into
Your Day
From daily routine to active training, effortlessly track every moment.
Naturally
Fit into
Your Day
From daily routine to active training, effortlessly track every moment.
Go Further with
Wellness Go
Speediance Strap gives you meaningful daily insights without a mandatory subscription, with optional memberships for enhanced guidance and premium experiences.
No Subscription Required.
Your data belongs to you. Core tracking, scores, and daily insights are included with Strap.
Included with every Strap
- Core body temperature trends
- Recovery score
- Sleep score and overnight tracking
- Activity and workout tracking
- Heart rate, HRV, and stress insights
- Menstrual cycle tracking
Specifications
Design & Durability
- Frame Material Strap: 316L stainless steel; Strap Pro: Titanium alloy with a matte sandblasted finish
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Frame Colors
Strap: Quartz Silver / Carbon Black
Strap Pro: Natural Titanium / Graphite Titanium - Included Wristband AirKnit stretch-woven wristband in Midnight Dark; fits wrists 120–220 mm
- Device Dimensions (L × W × H, Excluding Band) 33.78 × 23.80 × 10.35 mm
- Device Weight (Excluding Band) Strap: 24 g; Strap Pro: 17.0 g
- Weight (Including Band) Strap: 28 g; Strap Pro: 21 g
- Form Factor Screen-free fitness and health band
- Controls and Alerts Double-tap touch control, LED indicators, and vibration alerts
- Alarm Vibration alarm
- Water Resistance 5 ATM
- Operating Temperature 0°C–45°C
Sensors
- Optical Sensing PPG optical sensor
- Temperature Sensing Heat flux, skin temperature, and ambient temperature sensing
- Motion Sensing 6-axis IMU, low-power accelerometer, and geomagnetic sensor
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Electrodermal Activity (EDA) Sensor
Strap: Not included
Strap Pro: Included
Health & Wellness
- Heart Rate All-day heart rate monitoring, resting heart rate, and heart rate zones
- Heart Rate Variability (HRV) HRV monitoring and personal baseline tracking
- Respiratory Rate Respiratory rate monitoring, viewable in the app
- Blood Oxygen Blood oxygen monitoring and trend tracking
- Sleep Sleep stages, sleep score, and daytime nap tracking
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Stress
Strap: Stress assessment based on heart rate and HRV
Strap Pro: Stress assessment - Skin Temperature Skin temperature monitoring, viewable in the app
- Core Body Temperature Estimated core body temperature trends; changes relative to your personal baseline shown during exercise
Fitness & Recovery
- Warm-up and Heat Load Warm-up readiness and heat load monitoring
- Workout Tracking Manually start workouts; automatic detection and recording for selected activities
- Daily Steps Daily step tracking, viewable in the app
- Calories Burned Total daily calories burned and calories burned per workout
- Training Load and Recovery Cardiovascular load and recovery score
Battery & Charging
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Typical Battery Life
Strap: Approximately 14 days
Strap Pro: Approximately 14 days with EDA off; approximately 11 days with continuous EDA monitoring enabled - Charging Time Approximately 90 minutes (0%–100%)
- Charging Method USB-C-powered magnetic wireless charging dock; remove the band from your body before charging
- Charging Temperature 0°C–45°C
Connectivity & Essentials
- Bluetooth Bluetooth 5.3
- Location Tracking Connected GPS via your phone; no built-in GPS
- Heart Rate Broadcasting Broadcasts heart rate to compatible devices via Bluetooth
- Offline Storage Up to 14 days; retention periods vary by data type
- Companion App Speediance App
- Phone Compatibility iOS 13.0 or later / Android 9.0 or later
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Package Contents
Strap: Band device, AirKnit wristband, magnetic charging dock, charging cable, and quick start guide
Strap Pro: Band device, AirKnit wristband, magnetic charging dock, charging cable, quick start guide, and black armband
