Jets also use a turbine engine but jet propulsion is derived not from a propeller, but from the hot gases forced from the back of the engine. Although the jet is more costly, typical small jets can reach speeds of up to 400 mph and have a range of 1,000 miles. Medium-sized jets can reach speeds of more than 500 mph with a range of up to 2,000 miles. Large jets are capable of speeds more than 500 mph and can have a range of greater than 7,000 miles. Passenger capacity is typically fewer than 18, but larger jets may be configured for up to 30 passengers. Some models may have a satellite phone, fax and Internet, sofas, private bedrooms, or even a shower, but nearly all will have a private lavatory and many have a cooking galley.