Hammerhead Heart Rate Monitor 2.0 Description: The Hammerhead Heart Rate Monitor 2.0 transmits real-time heart rate and HRV data to Karoo GPS units, smart watches and phones, and other Bluetooth and ANT+ compatible devices. Thanks to a unique conductive rubber material and a honeycomb pattern for the electrodes, this monitor does a phenomenal job of staying in contact with the skin, detecting the user's heart rate, and transmitting data even when there is excessive sweat or when inclement weather strikes. 900 hours of battery life, resistant to oxidization and weather/waterproof down to 90 feet, a highly adjustable elastic chest strap, and all in an incredibly lightweight package wraps up the vital information for what is a very useful addition to a riders data acquisition gear. Features: Wearable heart rate monitor with an elastic chest strap Flexible conductive rubber material on back of strap with a unique honeycomb pattern increases skin contact area, allows consistent heart rate detection, and has excellent resistance to weather and oxidation Sends real-time heart rate/HRV data to Karoo GPS units, smartwatches, an app on a smartphone, and other compatible devices Dual Bluetooth channels and ANT+ allow this strap to pair up to two Bluetooth devices and numerous ANT+ receivers Lightweight and machine washable strap can be adjusted from 28" to 48" Waterproof down to 90 feet (30 meters) Up to 900 hours of battery life Specifications: Battery Type: CR2032 Connectivity: Bluetooth | ANT+ Weight: 15 grams (Pod) | 28 grams (Strap)