• Optical heart rate sensor compatible with Bluetooth® and ANT+
• Heart rate range 40-220 bpm (±5 bpm)
• Easy pairing via smartphone app (Bluetooth®)
• Low battery indicator (less than 20％)
  →Red LED blinks three times every 5 minutes until battery reaches critical level.
• Automatically turns off after 15 minutes of no heart rate measurement.
• Waterproof construct IPX7

■ Armband OHR-31 S [1604580]

■ Armband OHR-31 L [1604581] Option

■ Charging Dock OHR-31 [1604570]