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  2. Button cell - Wikipedia

    en.wikipedia.org/wiki/Button_cell

    Button, coin, or watch cells. A button cell, watch battery, or coin battery is a small battery made of a single electrochemical cell and shaped as a squat cylinder typically 5 to 25 mm (0.197 to 0.984 in) in diameter and 1 to 6 mm (0.039 to 0.236 in) high – resembling a button.

  3. Mercury battery - Wikipedia

    en.wikipedia.org/wiki/Mercury_battery

    A different form of mercury battery uses mercuric oxide and cadmium. This has a much lower terminal voltage around 0.9 volts and so has lower energy density, but it has an extended temperature range, in special designs up to 180 C. Because cadmium has low solubility in the alkaline electrolyte, these batteries have long storage life. [4]

  4. Watch - Wikipedia

    en.wikipedia.org/wiki/Watch

    Acrylic glass (plexiglass, hesalite glass): the most impact-resistant ("unbreakable" [46] [47]), and therefore used in dive watches and most military watches. Acrylic glass is the lowest cost of these materials, so it is used in practically all low-cost watches. Mineral crystal: a tempered glass. Sapphire-coated mineral crystal

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    The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

  6. Silver oxide battery - Wikipedia

    en.wikipedia.org/wiki/Silver_oxide_battery

    Silver oxide battery used to power a quartz watch movement; battery is marked as containing no mercury Until 2004, all silver oxide batteries contained up to 0.2% mercury , incorporated into the zinc anode to inhibit corrosion from the alkaline environment. [ 12 ]

  7. The 9 best rechargeable hearing aids, according to hearing ...

    www.aol.com/lifestyle/best-rechargeable-hearing...

    Cost : $2,000 – $6,000 ... And the biggest draw of the Audien Hearing Atom 2 is its simplicity and low cost, but there are a few drawbacks to consider. ... one of the main ones being that you ...

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