▁Gir ard ▁Per reg aux ▁Observ atory ▁Chron om eters . ▁ ▁Similarly ▁in ▁ 1 9 6 8 , ▁ 1 9 6 9 ▁and ▁ 1 9 7 0 ▁Se iko ▁had ▁ 2 2 6 ▁w rist watch es ▁with ▁its ▁ 4 5 2 0 ▁and ▁ 4 5 8 0 ▁Cal ib res ▁cert ified ▁as ▁observ atory ▁chron om eters . ▁In ▁both ▁cases ▁these ▁observ atory ▁chron om eters ▁were ▁then ▁sold ▁to ▁the ▁public ▁for ▁normal ▁usage ▁as ▁w rist watch es , ▁and ▁some ▁examples ▁may ▁still ▁be ▁found ▁today , ▁although ▁they ▁are ▁very ▁rare . ▁The ▁Gir ard - Per reg aux ▁Cal ib re ▁ 3 2 A ▁movement ▁that ▁went ▁into ▁its ▁Observ atory ▁Chron om eters ▁her ald ed ▁a ▁shift ▁in ▁watch making ▁technology ▁to ▁higher ▁frequency ▁movements , ▁and ▁thus ▁greater ▁accuracy , ▁that ▁is ▁followed ▁today ▁by ▁watch ▁manufact ur ers ▁such ▁as ▁Se iko , ▁P ate k ▁Philippe , ▁Z en ith , ▁A udem ars ▁P igu et , ▁Ja eg er - Le C ou ltre , ▁Ch op ard , ▁V acher on ▁Constantin , ▁Mat he y - T iss ot ▁and ▁such . ▁ ▁The ▁move ▁to ▁higher - fre quency ▁movements ▁was ▁necess itated ▁by ▁the ▁challeng es ▁pos ed ▁to ▁the ▁Swiss ▁mechanical ▁watch ▁industry ▁by ▁the ▁advent ▁of ▁the ▁quart z ▁watch ▁movement ▁in ▁the ▁late ▁ 1 9 6 0 s . ▁ ▁In ▁recognition