I just bought this clock 091029_BB_00_FB.EPS_1000.jpg
It's perfectly suited for darkroom work. A big clearly visible wallclock (30 cm). All safe red leds, and it counts the seconds. Ideal for developing films, in group darkrooms and even in a smaller darkroom. I got it online at Conrad. It's called "Orium". If someone is interested, dont wait too long. You never know how long a product will be on the market these days.