Can I change the rechargeable batteries of the watch?

Other issues

Recording (11)

• What sleep session of a night is shown in the app?
• What is measured with the heart rate recovery measurement?
• How do I synchronize the watch with a mobile device?
• When is the heart rate mode activated?
• How is activity measured?
• My health watch is detecting an activity that I am not doing (e.g cycling activity while I am driving a car or walking behind a stroller). How is this possible and does this increase my active minutes?
• How accurate is the activity measured?
• What is the optimal wearing position of the watch?
• What is measured of my sleep if I do not turn on the sleep mode?
• Which activities are measured?
• How can I keep track of calories burned during other activities than running, walking or cycling?

Software and Firmware (1)

• Why do I need a firmware upgrade? How do I do this?

Apps (2)

• Do I need a smart phone to use the watch?
• What mobile devices and operating systems is the app compatible with?

Performance (1)

• Syncing health watch data in the morning takes longer than usual.

First use and Installation / Download (1)

• How do I pair the watch with a mobile device?

Cleaning and Maintenance (1)

• How do I clean the Philips health watch?