This new smart watch from Garmin is their first using Mio Heart Rate Technology to monitor heart rate at the wrist, alleviating the need for a chest strapped based sensor. The watch's color display shows your heart rate zone and beats per minute at a glance while also keeping track of your steps, calories burned and distance traveled throughout the day.
As a Forerunner 225 owner you have exclusive access to Garmin Connect, where you can track your progress and earn virtual badges for extra motivation. You can also join online challenges and connect, compete and compare with friends and family. Suggest price is $299.99 USD and is available now for pre-order.
Tattooed owners of the Apple Watch are reporting problems with the heart rate monitor function on social media. It seems that the tattoo ink may interfer with the sensor.
According to Apple's website:
"Many factors can affect the performance of the Apple Watch heart rate sensor. Skin perfusion is one....Permanent or temporary changes to your skin, such as some tattoos, can also impact heart rate sensor performance. The ink, pattern, and saturation of some tattoos can block light from the sensor, making it difficult to get reliable readings."
It's possible then that people with darker skin may also experience problems, although it should be noted that the colors and composition of ink differs from skin coloring.
the Apple Watch uses technology called photoplethysmography. Here's how it works, according to Apple:
"Blood is red because it reflects red light and absorbs green light. Apple Watch uses green LED lights paired with light-sensitive photodiodes to detect the amount of blood flowing through your wrist at any given moment. When your heart beats, the blood flow in your wrist — and the green light absorption — is greater. Between beats, it's less. By flashing its LED lights hundreds of times per second, Apple Watch can calculate the number of times the heart beats each minute — your heart rate."
If you rock wrist ink, you might want to try before you buy if monitoring your heart rate is your goal.