Steinberg Systems SBS-ZW-50 Bedienungsanleitung Seite 27

j) Do not use sharp and/or metal objects (e.g. wire brush or metal spatula) for
cleaning as they may damage the surface of the appliance material.
SAFE DISPOSAL OF DISPOSABLE/RECHARGEABLE BATTERIES
The device has a Li 12V 2200 mAh battery.
Disassemble the used battery from the device in the same way as it was
assembled.
Give the battery to the cell responsible for their disposal.
DISPOSAL OF WASTE APPLIANCES
At the end of its useful life, this product should not be disposed of with normal
household waste but should be taken to a collection point for the recycling of
electrical and electronic equipment. This is indicated by the symbol on the
product, operating instructions or packaging. The materials used in this appliance
are recyclable according to their marking. By reuse, recycling or applying other
forms of use of waste machines, you make a significant contribution to the
protection of our environment.
Your local administration will provide you with information about the appropriate
disposal point for used appliances.