. "The OS1 (short for Off-String 1) was YoYoJam's first ever offstring yo-yo, prior to the introduction of the popular Aquarius. It was a limited release produced in 2001, having first debuted at Worlds. It is a plastic yo-yo with soft rubber shells that formed a Butterfly-shaped body profile. It also features starburst response, and the usual B-sized bearing. A glow-in-the-dark variation, as well as an \"Americana\" edition, were produced."@en . "OS1"@en . . . . "YoYoJam OS1"@en . "Butterfly"@en . "2001"^^ . . "White with Blue rims"@en . "Black with Yellow rims"@en . "Black with Orange rims"@en . "Width: 40mm"@en . . "White with Yellow rims"@en . "The OS1 (short for Off-String 1) was YoYoJam's first ever offstring yo-yo, prior to the introduction of the popular Aquarius. It was a limited release produced in 2001, having first debuted at Worlds. It is a plastic yo-yo with soft rubber shells that formed a Butterfly-shaped body profile. It also features starburst response, and the usual B-sized bearing. A glow-in-the-dark variation, as well as an \"Americana\" edition, were produced."@en . "White with Green rims"@en . . "Plastic with rubber rims"@en . "Size B YYJ Small"@en . "Starburst"@en . "N/A"@en . . . "Diameter: 74.3mm"@en .