Sinn Spezialuhren 303 M-kmh Silver

The Sinn 303 M-kmh Silver, reference 303.041, is a 41 mm steel chronograph with a model railway tachymeter scale. The polished case is 17 mm thick with a see-through back, water resistant to 200 metres. Silver electroplating finishes the UV-resistant dial beneath sapphire crystal. The dial shows small seconds beside its date and weekday displays. The automatic movement bears the calibre designation Valjoux 7750. A table on the back carries kilometre-per-hour and mile-per-hour scales. The case has a screw-down crown beside the luminous hour display.