Kettle/whistling kettle Item:SFMK05 Name:Music kettle Material:SUS201,SUS202,SUS304 Capacity: ... /4L/5L/6L Water kettleStainless steel whistling kettleProduct:Music kettleItem No.:SFMK05Capacity:1L/1.5L/2.5L ... for heating, more efficient. Circles on the bottom make it more durable and increase the heating area, ... on the outlet ,leave a hole to make sure the water turn back to the kettel,more health . 8. ...