Seiko has unique spring-powered drive technology and has an industry-leading level in maintaining global standards (including EU WEEE, Nickel and RoHS Directives). Therefore Seiko is always at the forefront of environmental protection actions in the watch industry.
Between 2007 and 2008, Seiko will switch to mercury-free batteries, again reducing the environmental impact of its products, a move ahead of changes in global button battery regulations.
Mercury: a dangerous element
For a long time, mercury has been recognized as a harmful and dangerous thing, and mercury batteries have been banned for many years in many countries.
However, the side of the coin cell battery for watches is because the mercury content of this battery is very low, and the corrosion resistance of mercury helps to enhance the safety of the entire product. Mercury is used to control the corrosion of zinc inside the battery; this is necessary to reduce the generation of hydrogen, which can cause the battery to expand and leak. Today, all silver oxide batteries contain no more than two percent of mercury by weight. The application of mercury-free batteries can reduce hundreds of kilograms of harmful metal mercury into the environment each day.
Seiko Mercury-Free Battery, ‘Zero Percent Mercury’
Seiko has superior quality standards, even the quality of its batteries. His use of mercury-free batteries was not unexpected. After passing various quality tests, Seiko mercury-free batteries guarantee high quality, stable voltage, and low leakage. These batteries have a long shelf life, even after experiencing extreme temperature changes. For example, battery maker Seiko Seiko Instruments Inc. has developed a new mercury-free silver oxide battery that is not only environmentally friendly, but also has improved performance. This new battery uses a new electrolyte that works better in the low temperature range (-20 degrees Celsius to 60 degrees Celsius). Not only that, the leakage resistance is also increased by 50%, thanks to the application of a new micro-mechanical ‘crimping curling’ technology.
Put into use immediately
Seiko watches have been fitted with mercury-free batteries since April 2007, and all Seiko watches manufactured since June 2008 will use mercury-free batteries.
Through this action, Seiko once again set an example in environmental protection work in the field of watches.
Source: Seiko Watch Corporation