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Step-by-step instructions for charging the ZeRound2HR device.
Instructions for initial setup, Bluetooth pairing, and smartphone connection.
Guides on initiating and answering calls using the watch.
How to track daily activities and set goals.
Guide to activating and using the heart rate monitoring feature.
Detailed specifications including dimensions, weight, battery, and sensors.
Guidelines and precautions for safe battery handling and charging.
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General