Pentax Optio WG-2 GPS Quick Manual page 26

Information for Users on Collection and Disposal of Old Equipment and Used
Batteries
If a chemical symbol is added beneath the symbol shown above, in accordance
with the Battery Directive, this indicates that a heavy metal (Hg = Mercury, Cd =
Cadmium, Pb = Lead) is present in the battery at a concentration above an
applicable threshold specified in the Battery Directive.
For more information about collection and recycling of used products, please
contact your local authorities, your waste disposal service or the point of sale
where you purchased the products.
2. In other countries outside the EU
These symbols are only valid in the European Union. If you wish to discard used
products, please contact your local authorities or dealer and ask for the correct
method of disposal.
For Switzerland: Used electrical/electronic equipment can be returned free of
charge to the dealer, even when you don't purchase a new product. Further
collection facilities are listed on the home page of www.swico.ch or www.sens.ch.
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1. In the European Union
These symbols on the products, packaging and/or accompanying
documents mean that used electrical and electronic equipments and
batteries should not be mixed with general household waste.
Used electrical/electronic equipments and batteries must be treated
separately and in accordance with legislation that requires proper
treatment, recovery and recycling of these products.
By disposing of these products correctly you will help ensure that the
waste undergoes the necessary treatment, recovery and recycling
and thus prevent potential negative effects on the environment and
human health which could otherwise arise due to inappropriate
waste handling.