All your Bangkok City Passes come with BTS Skytrain (which gives you unlimited 1 Day use) and Chao Phaya Tourist Boat (which gives you unlimited 1 Day use), so that you can sightsee the many attractions that is Bangkok.
See more: Get more discounts when you purchase bundles of attractions, tours and value adds rather than purchase them individually, allowing you to See More.
Do more: Unlimited 1 Day use of Chao Phraya Tourist Boat and BTS Skytrain. There is no place you can't get to with Chao Phraya Tourist Boat and BTS Skytrain.
Get more: Your Bangkok City Pass is a card that can be kept as a momento or souvenir of your trip to Bangkok. On your return to Bangkok in future, get discounts on tours.