Seiko Pogue - Automatic chronograph - Yellow dial - Rotating inner bezel - 6139-6002 Movement:: cal. 6139B Japan - 17 Jewels Instructions :.Upper button starts and stops chronometer second and lower button reset it after stopping. Pushing crown sets the date and pushing harder sets both of day and date quickly. Material: All Steel Case-Size: 41mm (without crown), Lug-to-Lug: 46.3mm Band-Size: Fits up to approx. 20cm (wrist size), Lug: 19mm . Condition: Perfect as new.. .The watch , insert bezel , and dial are aftermarket . Rotating inner bezel. Chrono reset is perfect. This watch contains aftermarket customisations without permission from the brand. This could impact the watch value and might void manufacturer warranties. Including , polishing , aftermarket dial , hands , bracelet , bezel insert and pushers. We ask sellers to mention any know aftermarket parts.The brand might refuse servicing and repairs to watches modified by unlicensed watchmakers. Please use photos as part of the description. The watch works well,- chrono - date - inner bezel Express Cargo : 2-6 Business day Wordwide ( fedex )