23 Contract liabilities

	31.12.2019		31.12.2020
	Current	Non-current	Current	Non-current
CHF 1,000
Timing of revenue recognition: point in time
Advances for products	14,349	22,667	41,263	19,898

Timing of revenue recognition: over time
Advances for products	990	-	1,069	-
Service contracts, including service-type warranties	20,883	3,280	20,027	3,117

Total contract liabilities	36,222	25,947	62,359	23,015

Net (decrease)/increase		(9,335)		24,874
Translation differences		(687)		(1,669)
Total change (current and non-current) compared with previous year		(10,022)		23,205