Mechanical stopwatch Start/stop/reset by single crown: clockwork mechanism: 13 jewels: chrome metal case: measuring range 15 minutes: 1/10 second increments. Supplied with lanyard and soft case: diam. 50mm: 250g (incl. packaging)Type Mechanical stopwatch : Measuring capacity 00:15:00 hr: min: sec: Acoustic alarm : Width 50.00 mm: Depth mm: Height 50.00 mm: Net weight 0.25 kg: Resolution 0.10 sec: Vibrating alert : Visual alarm : Accuracy ± sec/day: Protection class : Type of auxiliary energy : Dimensions (W x D x H) mm: Colour : Time intervals secs.: Display mins.