Mikasa Sports USA did a survey of the best volleyball refs around the world to see which whistle gives them their commanding performance. We went indoors; we went outdoors to the beach. Mikasa Sports USA found out what they like and why. Then Mikasa Sports USA built it; the refs blew it; and here it is. Black with a lanyard, in case you blow it too hard Specs: International model; Plastic; Including lanyard, retail packaged.