2.4 GHz-frequency digital wireless technology, the same technology used for everyday equipment such as wireless network is used for both the integrated cadence/speed sensor and the heart rate sensor. This technology practically eliminates all interference from external noise and cross-talk with other wireless users, providing you with stress-free riding. Read this instruction manual thoroughly and understand the functions of the wristwatch before using it. Keep this manual in a safe place for fu

To start the interval measurement, press the SSS button with the interval displayed in the lower display. Pressing the SSS button with the interval displayed does not affect start/stop of the measurement in the wristwatch. However, the elapsed time measurement in the wristwatch will start just as the interval starts, when the auto-mode is off ( lights off) and measurement is stopped. 4. When the interval counts down to zero, it will automatically change to recovery timer, which counts up until n