19mm Black Rubber Watch Band / Strap Comp. for Casio ABX 20, ABX 23, ABX 24, ABX 20U , AW 44 , AW 44Q , DB 150 , DB 150W , DB 81|Watchbands| - AliExpress
CASIO ABX-20 TWINCEPT Wrist Watch Module 1349 Vintage Old Retro Data Bank Rare $99.00 - PicClick
Some Twincept ABX-20s in different color/strap combos. : r/casio