6. Maintenance - Cleaning
If used frequently, the device surface gets dirty. Use a piece of soft cloth moistened with clean water to clean the device.
You are recommended to follow the principles below while cleaning:
Do not use aggressive detergents (such as abrasives or strong disinfectants). Use appropriate cleaning agents suitable for glasses, optical devices, screens, etc. Alcohol-based cleaners may not be applied. We recommend you to use IT cleaning wipes.