We've spoken about our love for the Chronostop before, and even featured a similar reference 145.007. This one has the same large, 41mm "jumbo" case, plus the Caliber 865, a simplified hand-wound chronograph movement, making the Chronostop a 60 seconds stopwatch only. The single pusher works the start-stop-reset function. You activate with one press, then press again to stop and hold to read the seconds hand. Releasing the pusher will reset to zero.
Where this particular example differs is with the faceted matte chapter ring, which shows a pulsometer instead of the more common tachymeter scale. Pulsometers were a seldom seem feature on watches that were used by doctors to measure a patient's pulse. They are extremely rare on Chronostops and seem to have mostly come on some of the earlier models.
Overall this is an extremely wearable watch, and a great addition to any collection.
Reference: 145.007 Movement: Type: Manual Wind, Caliber 865, 17 jewels Freshly serviced movement keeps excellent time. The chronograph function works as intended. One year mechanical warranty included. Case: 41mm (not including crown and pusher) Stainless Steel case and back Bracelet: Hirsch Tiger Performance Strap, perforated fine-grain calfskin with natural rubber lining in brown. Overall Condition: Case has previously been polished, but still retains some of its original brushed finish. The acrylic crystal is new. Dial and hands retain original, patinated tritium lume. Both in excellent condition.