Sport Silicone Series (20mm) fits for Active 2, Active, GTR Mini, GTS 4, GTS 4 Mini, GTS 3, GTS 2, GTS 2e, GTS 2 Mini, GTS, GTR 42mm, Bip 3 Pro, Bip 3, Bip U Pro, Bip U.
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The band fits wrist dimensions of 135-195mm