There are three types of unlimited travel passes available: one-day, two-day, and three-day. Over a set number of travel days, unlimited travel around Sado is allowed on regular buses operated by Niigata Kotsu Sado. These passes are not valid for Scheduled Tour Buses (guided), liner buses, etc.
To pay for your bus fare, simply show the driver your pass when you get off the bus.
There are a range of special promotions available to～pass holders, which will save you money at participating facilities, and also discounts at shops, restaurants, etc.