The Helio Strap is built for those who train hard and recover smarter. Designed for precision, endurance, and everyday versatility, it delivers industry leading accuracy, extended battery life, and a lightweight, comfortable fit that moves with you. Worn all day, it provides continuous heart rate monitoring and deep health insights without the hassle of subscriptions. More than just a fitness tracker, the Helio Strap is a vital part of the Amazfit ecosystem. Seamlessly integrating with Amazfit smartwatches, the Helio Ring, and the Zepp App, it powers a complete training system designed to help you train with purpose, recover effectively, and repeat with confidence. The Helio Strap features a water-resistance grade of 5 ATM, meaning it can withstand pressure equivalent to 50 meters of static water depth for up to 10 minutes. Recovery Redesigned Unlike competitors that rely on a single device, the Amazfit Ecosystem offers a fully integrated training system that seamlessly connects your smartwatch, like the Balance 2, with the Helio Strap and other devices through the Zepp App. This ensures uninterrupted data collection whether you're training, sleeping, or resting - even when your watch is off. By eliminating data gaps and extending battery life, the system delivers accurate heart rate monitoring, fatigue assessment, and recovery analysis. With real-time insights and AI-powered recommendations, it empowers you to train smarter, recover better, and repeat every day. BioCharge Energy Monitoring BioCharge™ helps you understand your energy levels throughout the day. From the moment you wake up after a night of rest, your BioCharge™ score will adapt based on your daily workouts, activities, stress levels, and rest periods. 24/7 Health Monitoring Fine tune your fitness with real time insights into heart rate variability, sleep¹, blood oxygen levels, stress, exertion, fitness level, and more, powered by Amazfit’s advanced BioTracker™ technology². Strength Training and Hyrox Modes Stay on top of your training with detailed tracking for reps, sets, and rest periods. Train smarter with exclusive HYROX Race mode, which offer race-specific and fitness benchmark training tools. Your Workouts, Your Way Unlock your full training potential with 27 built-in sports modes available through the Zepp App. Each mode is tailored to capture key performance metrics and optimize your workouts. Post-Workout Analysis Eliminate guesswork and train with precision using advanced performance metrics including VO₂ max, training load, training effect, and recovery time. Get a clear picture of how hard you're working. Zepp App, Powering Amazfit Your free companion for tracking nutrition and fitness, optimizing sleep and recovery, analyzing health trends, and gaining personalized insights - all in one easy to use app. Seamless Integration with Third-Party Platforms Sync your training data from the Zepp App to leading platforms3 like Strava, TrainingPeaks, adidas Running and komoot, to consolidate your fitness data and keep your routine fluid across multiple tools. Charge Less, Move More Train, recover, and repeat without missing a beat. The Helio Strap can last up to 10 days from a single charge⁴. 1. Sleep monitoring can record night sleep and naps that last more than 20 minutes. Sleep Breathing Quality tracking needs to be enabled in the Zepp App or in the settings of the watch's Sleep feature. 2. This product and the Zepp App are not medical devices and cannot be used for medical purposes, or as basis for diagnosis of any medical condition. Detection results are provided for reference only. Please consult professional medical institutions if you feel unwell. 24-hour monitoring of heart rate and blood-oxygen saturation (SpO₂) need to be enabled in the Zepp App. For heart rate monitoring, the user must enable Auto Heart Rate Monitor in the Zepp App, and the minimum value can be set to 1 minute. Abnormal heart rate alerts and the preset value need to be set in the Zepp App. To measure blood-oxygen saturation (SpO₂), please wear the watch tightly at one finger-width from the wrist, and keep your arm still for best results. SpO₂alerts are sent if the detected rate is too low compared to the preset value, which needs to be set in the Zepp App, at a minimum of 80%. Movement, and environmental and physical characteristics can affect speed and accuracy of monitoring and measurement. The 24-hour stress level monitoring needs to be enabled on the watch or in the Zepp App. Alerts for high stress levels are based on the preset value, and prompts for the breathing exercise need to be enabled on the watch. Smart health alerts need to be enabled in the watch settings or Zepp App. To process the one-tap measurement and other manual metric measurements, please wear the watch tightly at one finger-width from the wrist, and keep your arm still for best results. Movement, and environmental and physical characteristics can affect speed and accuracy of monitoring and measurement. 3. Fitness app availability may vary depending on your country or region. Apple Health is only available on iOS devices, and Google Fit is only available on Android devices. 4. The battery life may vary according to the settings, operation conditions and other factors. So the actual result may differ from the laboratory data. Typical usage scenario: Wear all day; heart rate monitoring and blood-oxygen detection is always on and measures continuously; sleep monitoring and auxiliary are enabled with 8 hours of sleep breathing quality monitoring; stress monitoring is enabled; exercise three times a week while linked to your smartphone's GPS for 60 minutes each time. 5. According to the ISO 22810:2010 standard, the Amazfit Helio Strap achieves a rating of 5 ATM, for a water-resistance of up to 50 meters, and is therefore suitable for splashes, snow, showering, swimming. It has passed third-party testing conducted by SGS, and the report number is SHES250300449771. Remove the strap when taking a hot shower or trip to the sauna, since too much steam can affect the seal and make it less water-resistant in future. For more information, please visit the support page at: support.amazfit.com. 6. The material used for the packaging box is 100% recyclable, with naturally degradable materials including mineral-free inks and anodized aluminum used in the bronzing process. 7. Smart recognition of strength training exercises can only be engaged within the Strength Training sports mode. 25 exercises are able to be recognized at time of product release, including: Bodyweight squats, Bodyweight straight arm front squats, Barbell squats, Tricep pushdowns, Bent over rows, Barbell bench press, Sit-up holds, Knee-touch sit-ups, Dumbbell flys, Burpees, Burpee jumps, Overhead tricep extensions, Lying tricep extensions, Lateral raises, Jumping jacks, Lat pulldowns, Deadlift, Push-up, Shoulder press, Pull up, Bicep curls, Seated cable rows, Dumbbell drag curls, Straight-arm pulldowns, Russian twists. If an exercise is not auto-recognized by watch, the Zepp App can provide a list of muscle groups or exercise names to choose from. Training templates and interval training templates are compatible with: Strength training, Outdoor running, Treadmill, Outdoor cycling, Indoor cycling, Rope skipping, Rowing machine, Indoor fitness, Core training, and Stair climbing.