Citizen CC1x Instruction Manual page 72

Eco-Drive (solar powered) watch handling precautions
WARNING
Use Only the Specified Battery
• Never use a battery other than the rechargeable cell specified for use in this watch.
Although the watch structure is designed so that it will not operate when another type of battery is
installed, if a silver battery or other type of battery is installed in the watch and the watch is recharged,
there is the risk of overcharging which may cause the battery to rupture. This can cause damage to the
watch and injury to the wearer. When replacing the rechargeable cell, always make sure to use the
designated rechargeable cell.
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