答：Unused battery anode surface of water droplets...
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CR2477Button batteries
Model：CR2477
Introduction：CR2477Button batteries,mainly for the luminous gifts and toys, flashlights, watches, electronic watches, movement, electronic gifts, electronic calendar, ear hearing aids, calculators...。
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CR2450Button batteries
Model：CR2450
Introduction：CR2450Button batteries,mainly for the luminous gifts and toys, flashlights, watches, electronic watches, movement, electronic gifts, electronic calendar, ear hearing aids, calculators....
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CR2430Button batteries
Model：CR2430
Introduction：CR2430Button batteries,mainly for the luminous gifts and toys, flashlights, watches, electronic watches, movement, electronic gifts, electronic calendar, ear hearing aids, calculators...
CR1632Button batteries
Model：CR1632
Introduction：CR1632Button batteries,mainly for the luminous gifts and toys, flashlights, watches, electronic watches, movement, electronic gifts, electronic calendar, ear hearing aids, calculators...
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CR1616 Battery
Model：CR1616
Introduction：CR1616 Battery,mainly for the luminous gifts and toys, flashlights, watches, electronic watches, movement, electronic gifts, electronic calendar, ear hearing aids, calculators...