SUUNTO AMBIT2 R User Guide - Manual (Page 12)

4 GETTING STARTED
Your Suunto Ambit2 wakes up automatically when you attach it to
your computer or a USB charger using the supplied USB cable.
Fully charging an empty battery takes about 2-3 hours. Buttons are
locked while the USB cable is attached.
To start using your watch:
1.
2.
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