G-Tide S1 Lite Manuel D'utilisation page 7

Charging instructions
1. Adopt magnetic suction charging.
2. Support PC USB and standard 5V charger.
3. Fully charged in 2-3 hours.
Do not connect any two pins of the magnetic charging cable with
conductive material at the same time, otherwise, it may cause a
short circuit.
The charging port should be wiped clean with alcohol, otherwise
the contact of the charging pins will be affected when charging.
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