Diameter : 32mm without crown Movement : Tissot chronograph with Omega 28.9 T2 / Lemania 13CH movement is operating flawlessly and accurately Case Material : Steel. Good condition case. Bracelet material: Black leather - end to end : 22 cm clasp in steel Glass : Plastic - Good condition with risks. Dial : In Good Condition. Condition : Good condition 8.5 about 10 Other specifications : The watch without box. Warranty 1 year . Shipping registered and insured. Omega Movement - Rare & Historically Important. The Omega 28.9 chronograph was Omega's first true wristwatch chronograph - the first small wrist chronograph movement made by Omega in 1932 when the company had merged with Lemania and Tissot. Made in only very small quantities, Lemania produced the movements for Omega / Tissot. A small movement by modern standards, it had some reliability issues which resulted in Omega almost immediately introducing watches based on the Lemania calibre 15CH (Omega 33.3) in 1933 at which point the 28.9 was slowly phased out of the range until it was discontinued by 1943. Stainless steel examples of this watch were used by the commanders and pilots of the Italo Balbo air force who used them on trans-Atlantic crossings. Another famous owner was Amelia Earhart who was wearing a 28.9 when she disappeared during her transpacific crossing. Despite the significance of the 28.9 not many examples exist - they are now very rare and as such are highly sought after by collectors.