Used for about a year and then stored at home. There are no stains or noticeable scratches on the main unit, but there is a bug in the lighting (see photo). There are no problems with the functionality. Operation confirmed. Keycaps removed and cleaned. APEX PRO mini RGB lighting compatible with OmniPoint 2.0 and Rapid Trigger. - Model Name: APEX PRO mini - Key Arrangement: Japanese layout - Connection Method: Wired - Key Switch: OmniPoint 2.0 - Back Design: Non-slip - RGB Lighting: Supported Connection type: Wired Keyboard layout: Japanese Switch/Type: OmniPoint Keyboard/Size: Small Connection method: Cable Connection type: Wired Keyboard layout: Japanese Other: Gaming keyboard