The annual Beijing Marathon is just around the corner, and many runners who have signed up are already in training mode. If you want to perform at your best, understanding your heart rate changes is crucial—but wearing a chest strap heart rate monitor during a marathon can be uncomfortable for many. Recently, an optical heart rate running watch has become a hot topic in the running community. It uses advanced optical heart rate monitoring technology to display real-time heart rate changes without the need for a chest strap. This product, called the Forerunner 225, comes from Garmin, the world’s leading manufacturer of running watches. Runners signing up for this year’s Beijing Marathon can finally run without strapping on a chest monitor anymore.
The Forerunner 225 features a built-in optical sensor that directly detects blood flow under the skin through LED light beams and photoelectric components. Through precise calculations, it delivers accurate heart rate readings, even during exercise. You don’t need to worry about significant errors in the heart rate data. To address this, the Forerunner 225 is designed with a light shield on the back of the device that fits snugly against the runner's wrist. This not only enhances comfort but also effectively blocks ambient light interference and minimizes GPS signal disruption, ensuring highly accurate heart rate data comparable to that of traditional chest straps.
The Forerunner 225 features a high-resolution color screen and a built-in high-precision GPS chip for fast and accurate positioning. It is also compatible with the ANT+ transmission protocol and supports traditional chest strap heart rate monitors. With a built-in accelerometer sensor, it can provide accurate data even when running indoors. Additionally, the Forerunner 225 is fully waterproof, making it usable in all types of rainy weather.
The Forerunner 225 offers a heart rate zone function, allowing users to intuitively understand their current exercise status. For example, a heart rate of 108 beats per minute is suitable for warm-ups before exercise and cool-downs afterward. A heart rate of 117 helps burn fat and build endurance. When the heart rate reaches 165, engaging in moderate to high-intensity workouts can enhance muscle strength and stamina. At 180 beats per minute, an anaerobic alert is triggered, advising users to lower their heart rate.
The Forerunner 225 can record and display a wealth of running data including time, distance, pace, lap time, average pace, cadence, lap distance, average heart rate, real-time heart rate, heart rate zones, timer, and calorie consumption. Users can gain a comprehensive understanding of their workout metrics. Even during a run, vibration and sound alerts keep you informed of your data without needing to glance down at the watch—like having a personal coach constantly monitoring your training status.
In addition, the Forerunner 225 also includes sleep monitoring and sedentary reminders similar to those found in smart bands. This makes the Forerunner 225 more than just a running watch—it becomes even more integrated into the daily lives of runners. Even when you’re not running, it remains useful. Its stylish, sleek, and slim design allows it to be worn as a regular watch. It can track daily steps, distance covered, and calorie burn, helping you stay motivated to work out and achieve your daily fitness goals.
