ZMF Pro ClockThe ZMF Pro Chess Clock incorporates many desirable features, yet is so simple to learn and use that you'll be playing in minutes. Sold worldwide, many years of feedback and evaluating user experience of the ZMF line has led to this amazing and durable PRO version clock. From the straightforward easy set time controls, preset tournament modes and user custom 2 or 3 stage time control modes for tournaments and other non chess timing modes, this clock