ok then how can i transfer it into another address or sell if i want.
As you can see in blockchain if you paste my address and search you can see my purchases.
The only thing i am interested is how can i transfer it in a wallet like blockchain or electrum and sell if i want.
I think you didn't fully understand how bitcoin works.
First, i would suggest to read this:
https://en.bitcoin.it/wiki/Private_key.
Afterwards, the address which you claim to be yours.. how did you
generate it?
A watch-only wallet is basically a block chain explorer for your one (or multiple) address(es).
You can't just spend from this address. You need the private key. The private key has been created the moment you generated your address.
So.. until you have one of the following, you won't be able to move/access the coins:
1) a backup mnemonic seed (12/18/24 words)
2) the private key for your address
3) a backup of your wallet-file (
not watch-only-wallet; you need a wallet file which contains the private keys!)