Not sure of right forum category for this. Interested in any pro or con comments. Being old fashioned type I have acquired and sold without loss several Speedy Pro and other big ones. Prefer the old style compact Chronos. Traded a good p.w. for this one. Originally sold in 1998. Unfamiliar with Marcel. Has 7750 Valjoux mvt. Nicely finished. 4 atm waterproof with screw down buttons and crown with sharkskin. Only 37mm outside diameter. Sapphire back and front. 14 years old now. Bet few made; nice little ones I prefer seem to be unpopular.