This new chronomat evolution went for a walk to a service watch makers place...so:i put it on the mesuring machine for time keeping and it was +3 to +5sec per day in all different possitions..then in vacum machine for 3 minutes at 5bar for waterproof test and passed then i messured the weight of this watch..with all the links on braclet 204 grams,then took out 3 pieces of the bracelet and now its 194...machive and very well constructed!And the feeling of the bezel its very very nice and solid! and somemore pics for you near my daytona! and a pic of the machine that made the waterproof test.