It is recommended that you buy a Renata 380 / SR936W coin cell battery. It is a silver oxide “high drain” battery, 82mAh 1.55V (dimensions 9.5 x 3.6 mm).
In principle, you could use any silver oxide high drain battery (1.55V, dimensions 9.5 x 3.6 mm). However, if the capacity of the chosen battery, for example, is lower than 82 mAh, the battery life will be shorter than envisaged for DUKADA Trio. Moreover, the product was tested with a Renata 380/SR936W and it is therefore not sure that the specifications, especially in terms of durability, will be met if you choose a different battery.