Question about some items (D/P)

[Cooler]

Just wondering, what do these items do?:
-Power Bracer
-Power Belt
-Power Lens
-Power Band
-Power Anklet
-Power Weight

I'm thinking about getting one of these from the Exchange Service Corner.

[Skivenski]

Just wondering, what do these items do?:
-Power Bracer
-Power Belt
-Power Lens
-Power Band
-Power Anklet
-Power Weight

I'm thinking about getting one of these from the Exchange Service Corner.
If your Pokemon is holding one of them while it levels up,it raises one of their stats,but decreases one of their stats too.

[Cooler]

Do you mind listing which item raises and drops each stat?

[Skivenski]

Do you mind listing which item raises and drops each stat?
I think all of them decrease the Pokemon's speed stat,but I'm not sure.

Try looking on Serebii or just try searching.