**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.