Do you want the economical and greener lifestyles? Maybe you should start from minor matter， and just like use the One-time Carbon-Zinc Batteries.One-time Carbon-Zinc Batteries adopt universal standards， most of them suitable for cameras， toys and many other electronic devices. Except that， it features extensively long working life and high efficiency， great for use.                                    Features                New battery<br>    High quality and durable<br>    Provides excellent continuous power sources to your device<br>    High energy density， long life battery<br>    This battery has an extra long life for all your battery powered devices<br>                                                            Specifications                        Battery Type     One - time Carbon - Zinc Batteries    <br>          Model     PAKO    <br>          Voltage     9v    <br>          Weight     5.11oz / 145g    <br>          Dimensions     4.8 x 2.6 x 1.6cm / 1.89" x 1.02" x 0.63" (L x W x H)    <br>                                                             Package Includes                4 x PAKO 9V / 6F22 One - time Carbon - Zinc Batteries<br>