Thanks for the review photo from @jack.pendragon on instagram
No battery inside:
For safety delivery, battery will be taken out before shipping, so you need to buy below extra battery from your local store.
Battery size like this in the picture
Material: chain is made of metal, please keep away from water.
Watch diameter: 4cm/1.57"
Chain length: 13.5cm/5.31"
Colors: Gold with Princess Serenity inside/Pink with prism crystal inside
Again, this watch has no batter when you receive it, you have to find extra battery to make it runs.