The COROS heart rate monitor offers precise heart rate data with absolute comfort. It is compatible with any device with Bluetooth connectivity and provides over 38 hours of continuous heart rate monitoring. The soft fabric strap adjusts around the arm without discomfort, and its textured surface ensures it stays in place.

Main features:

• Dimensions: 42.5 x 28.4 x 9.1 mm
• Sensor weight: 9.7 grams
• Weight (sensor + strap): 19 grams
• Band material: Polyester fiber, nylon, spandex
• Optical heart rate material: 5 LED lights with 4 photodetectors
• Arm size: 7.09-12.6 inches (18-32 cm)
• Wireless connection: Bluetooth
• Supported devices: Bluetooth-compatible devices that receive heart rate data
• Water resistance: 3 ATM
• Operating temperature: 20°C to 50°C (-4°F to 122°F)
• Storage temperature: -20°C to 60°C (-4°F to 140°F)
• Battery capacity: 55 mAh
• Charging time: Less than 2 hours