Since I'm Polish I can as well tell you what the photo in the first post says.
With the DEKATAMA device you can get accessories for your Tamagotchi Friends (jewellry).
Come to the shop with your Tamagotchi Friends!
Set your Tamagotchi Friends to download the jewellery:
1. Choose the BUMP icon
2. Choose the option "SPECIAL"
3. Approach your Tamagotchi Friends (back) do the Dekatama in the place where the "BUMP!" sticker is located. The jewellery will be transfered into your Tamagotchi Friends.
You can connect your Tamagotchi Friends using the NFC only 5 times a day. The information about the amount of the BUMP HEARTS can be found under the clock."THIS
post here says the exact same thing. THIS
only says that the dekatamas will be located in shops called SMYK (toystores, like Toys'R'Us).
Well, if I see one somewhere, I'll make a photo of it. Though it is surprising, since I cannot find Tamagotchi Friends in toystores and I have been searching recently.