OK. So finally I purchased the below power bank. Specifically: Type:12000mAh / Color:Black(+S$8.50) Add-ons:none / Free Cable:3-in-1 Cable. Heh.
Here are the photo of the product (and the back cover of the packaging--curious English words aside, I'm more interested to note about this part to please charge the power bank every 3 months if the bank is not be used for a long time. Hmmm...)
PS. What I like about the seller, The Simple Shop is that the product was delivered together with a name card stating the contact no and email address so that the buyer can contact the seller should there be any issues with the product. Thumbs up!!