It's sunny today so thought it best to wear the 40mm Citizen Stainless steel Chronograph Eco-Drive Watch (H500-S101662) caliber No. H500 analogue solar-powered watch, accuracy Β±15 seconds per month, crystal oscillator 32,768 Hz.
Thought I had a mark on the glass until realised it was the reflection of the back of the tablet I took photograph with.