Unique Japanese technology that enables better performance after storage, over-discharge, and high temperaturesEnvironment friendly - manufactured without a tiny bit of any mercury or chromiumSteel stretching technical - Increases capacity without extra volumeLow self-discharge: Can store for up to 7 years yet still be usedSize:Z17SpecificationsManufacturer: Xiaomi Model: ZI7 Type: Alkaline Batteries AAA Dimensions: 0.10×0.10×4.40 cm Weight: 12g Rated power: 1.5V Protection: Built-in Protected Circuit, Short Circuit Protection Suitable for: Flashlight, MD, Microphone, MP3, MP4, MP5, PDA, Portable Games Eco protect: Mercury Free Cadmium Free Color: Rainbow Attention!1.) Please keep these batteries away from Children under 5 years old in case of swallowing. 2.) Don't damage, disassemble, short circuit these batteries or throw them into fire and water. 3.) Keep them in cool and dry place. 4.) In order to makes your device works longer, please don't mix new battery and old battery. 5.) If you don't use the device for a long time, we suggest you take out the batteries. 6.) It doesn't contain any mercury or chromium, if the capacity used up, you can throw them away in dustbin.  What's in the package10 x Xiaomi AAA Batteries. (with storage box)