SPECIFICATIONS Case: 43MM Stainless Movement: Sellita SW 200 w/ date and External Fine Adjustment System (EFAS) Dial: Blue, "Clous de Paris" guilloché centre, ribbed outer segment Silver Arabic numerals and hands EFAS indicator Strap/Bracelet: Stainless Steel Link (fits up to 8.5 inch wrist) Extras: Swiss Made; case thickness: 12MM; Anti-reflective sapphire, 50M water resistant DETAILS Bulova Accutron presents the first ever automatic watch that lets the wearer individually control its accuracy thanks to the External Fine Adjustment System (EFAS). No need for a professional; the wearer operates the system by inserting a key at the 9 o'clock position to achieve precision of 99.99% on average.