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            **Product Specifications:**
**Brand:** Magene
**Model:** H803
**Product Name:** Heart Rate Armband "Chunhui"
**Features:**
Precisely measures and transmits heart rate data when worn on the arm
Real-time monitoring of heart rate with dual-beam array photoplethysmography sensor
Utilizes changes in blood hemoglobin density to detect heart rate variations
Five heart rate intensity zones for optimal exercise monitoring and effectiveness
- Warm-up Zone: 50%-60% of maximum heart rate, recommended duration 20-60 minutes
- Fat Burning Zone: 60%-70% of maximum heart rate, recommended duration 1 hour or more
- Aerobic Endurance Zone: 70%-80% of maximum heart rate, recommended duration 10-60 minutes
- Threshold Zone: 80%-90% of maximum heart rate, recommended duration 2-20 minutes
- Anaerobic Endurance Zone: Above 90% of maximum heart rate, recommended duration under 5 minutes
High heart rate alert with vibration feedback for safe exercise
Comfortable and adjustable armband suitable for various sports activities
IML processed shell for durability and scratch resistance
Long-lasting battery life of up to 45 hours
Supports ANT+ and Bluetooth protocols for multi-device connectivity
IP67 waterproof and dustproof rating
Heart rate accuracy: ±1 BPM
Heart rate range: 40-220 BPM
Weight: Sensor 12g + Armband 9g
Wireless interfaces: ANT+, Bluetooth
Charging method: Magnetic charging
Sensor dimensions: 44*31.6*11.2mm
Armband dimensions: 370*25mm
Armband adjustment range: 190-310mm (recommended for weight 40-120kg)
Armband cleaning: Hand wash gently
**Package Contents:**
1 x Heart Rate Sensor
1 x Elastic Armband
1 x Magnetic Charging Cable
1 x User Manual
**Compatibility:**
Compatible with various sports devices and apps such as Garmin, Polar, Wahoo, Strava, Nike Run Club, Keep, and more
Supports connection to standard ANT+ or Bluetooth devices like treadmills and rowing machines
Compatible with Apple Watch (requires upgrade to watchOS 10) for displaying heart rate data via Bluetooth
**Note:** Specifications may vary slightly based on actual usage conditions and environmental factors.
 
                        
                     
                        
                     
                        
                     
                        
                     
                        
                    