For CZ Smart WearOS watches with charging rings on the watch case-back, any of the charging cables with the circular charging pucks (2 or 4 pins) can be used to charge the watch but performance may vary.
To note, the charging rings on CZ Smart WearOS watch case-backs consist of either 2 concentric rings or 2 concentric rings that are split, creating 4 separate electric contacts. The WearOS watches with split rings, 4-pin case-backs, can charge at the higher and faster charge rates when paired with a 4-pin charging puck. All WearOS watches with charging rings will charge at a slower rate when using the 2-pin charging pucks. Watches with 2 concentric rings on the case back (not split) will also charge at the slower rate even when paired with a 4-pin charging puck.
The same charger for CZ Smart Gen 2 touchscreen will also charge the CZ Smart hybrid Gen 2 smartwatch.