the watch is mm wide and was worn on the end of a chain
{"Image Make": "Canon", "Image Model": "Canon EOS 5D Mark II", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop Lightroom 6.1.1 (Macintosh)", "Image DateTime": "2016:04:30 09:16:07", "Image ExifOffset": "218", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "808", "Thumbnail JPEGInterchangeFormatLength": "17266", "EXIF ExposureTime": "1/200", "EXIF FNumber": "32", "EXIF ExposureProgram": "Manual", "EXIF ISOSpeedRatings": "250", "EXIF ExifVersion": "", "EXIF DateTimeOriginal": "2016:04:23 13:33:05", "EXIF DateTimeDigitized": "2016:04:23 13:33:05", "EXIF ShutterSpeedValue": "477741/62500", "EXIF ApertureValue": "10", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "3", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "100", "EXIF SubSecTimeOriginal": "23", "EXIF SubSecTimeDigitized": "23", "EXIF FocalPlaneXResolution": "5616000/1459", "EXIF FocalPlaneYResolution": "1872000/479", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Manual Exposure", "EXIF WhiteBalance": "Manual", "EXIF SceneCaptureType": "Standard", "EXIF BodySerialNumber": "820500459", "EXIF LensSpecification": "[100, 100, 0/0, 0/0]", "EXIF LensModel": "EF100mm f/2.8 Macro USM"}