chest strap

Heart Rate Monitors and Accuracy: wristband versus chest strap – Machine Shed Fitness

— chip away in set-up .. tbudget 1h

read all the docs .. care instruction esp. on the sensor.

download and xx the APP

no need to finish before I go to Beijing.

— wrist band .. Garard said Garmin watch is slow to reflect the heart rate change
— chesk strap is probably far more accurate for me, and possibly cheaper. How do you see the heart rate?

My chest size is 84cm. Official M-XXL : 67~95cm (26~37 in)

The cache feature of H10 is irrelevant since I need to monitor in real time. Swimming is tough because you can’t carry mobile app in water. H10 can only transfer cached data After swim.

— care, replacement of consumables
Battery is the main consumable, and it only costs $6.  400h on H9, same as H10

Always separate the connector (sensor) from strap after use (to save battery).

Wash the stap. After repeated use, the strap tends to wear out.