The Lezyne HR Flow Sensor allows you to accurately monitor your heart rate for improved analysis of your ride performance. The adjustable, flexible strap makes it easy to fit and extremely comfortable.

The HR Flow Sensor is a high performance heart rate monitor focused on reliability and comfort. Designed 100% to Bluetooth Smart standards for maximum compatibility, it features a durable, lightweight, polycarbonate construction with a translucent body and is paired with a soft flexible elastic chest strap. The replaceable CR2032 coin cell battery offers long-lasting service. Use the Sensor Ally smartphone app to update your Heart Rate Flow Sensor to the latest firmware version.

Features:

• Durable, lightweight polycarbonate construction with translucent body
• Conforms 100% to Bluetooth Smart standards for max compatibility
• Flexible strap made from athletic materials
• Replaceable CR2032 coin cell battery optimized for long-lasting use
• Use the Sensor Ally smartphone app to update your Heart Rate Flow Sensor to the latest firmware version
• Weight: 47 grams
• Dimensions: 68mm, 30mm, 10mm