The Zi-O Trinity Ridewatch (ジオウトリニティライドウォッチ) allows Zi-O to transform into Zi-O Trinity. It has three layers that open to cover the Ziku-Driver’s screen and reveal the faces of Zi-O, Geiz, and Woz on the front of the watch. The first, representing Zi-O, opens upon inserting the Ridewatch into the Ziku-Driver. The other two, representing Geiz and Woz, are opened by rotating the Unite Ryuzer dial on the side of the Ridewatch. Doing so also transforms Geiz and Woz into armor for Zi-O’s transformation into Zi-O Trinity. It is labelled as Zi-O and dated 2019.