Model = BY0000-56L / H610 S060257 HST 681020280 GN-4W-S > 12G [*] =================================================================== CITIZEN has a line of "Aviation Watches" called » SKYHAWK « with a mixed analog & digital (LCD) surface. I prefer the "Pure Analog" Model »BY0000-56L« of the » PERPETUAL CALENDAR « - Line because it seems to be the "Best-Of-Both-Worlds" combining mechanical beauty of a SlideRule/Aviation Watch with Radio-/Quartz-/Solar-Technology: CITIZEN's Model »BY0000-56L« has a mechanical surface - but it is motorized, MICRO-PROCESSOR controlled and charged by SOLAR POWER. ( The »ECO-DRIVE TECHNOLOGY« doesn't need an exchangable battery !) It is a RADIO Controlled QUARTZ-Chronometer also with STOP WATCH & DATE DISPLAY. DATE CHANGE is automated, considering LEAP YEARS. A 24h-SCALE, a 24h-ALARM, as well as (easy to switch) ALL TIME ZONES are useful additional features - also working w/o Radio Connection! CITIZEN's Model » BY0000-56L « Surface: ------------------------------------------ Outer Circ.Scales = SlideRule 34 mm Diameter (C) = easy turnable by the left "8"-Knob; Markers: LITERS, FUEL LBS, OIL LBS, IMP GAL, US GAL (D) = fix; Markers: NAUT, STAT, KM (h/min) = Conversion ( e.g. 4:30 = 270 min ) Calendar = Automatic Settings ( incl. LeapYears ) WorldTime = (eg.) LAX = LosAngeles = Pacific Time PAR = Paris = Middle-European Time ... Sub Dials = StopWatch Minutes (+ Power Reserve Check) 24h Watch; ( see R E M A R K [#]... ) Seconds; (+ RadioStation Indication: EUR = DCF77; USA = WWVB; JPN = JJY; CHN = BPC ) Crown [*] (w.Buttons A & B) = Set (World) Time / Set Date; Set (24h) Alarm Hands = Hours & Minutes ( = luminous ); StopWatch = 0.2 Second Increments Accuracy = +/- 15 Seconds per Month (w/o RadioSignal) StopWatch = max. 1 Hour Upper Knob(B) = StopWatch = Start/Stop/Start/ ... Lower Knob(A) = StopWatch = Reset (+ Check Power Reserve) (+ Radio Reception on demand) Power Reserve = 8 Month after full charge Water Resistance = 20 bar Markers : DayLight SavingTime Indication; Signal Reception Indication; Alarm Indication See also : WWW.CITIZENWATCH.COM R E M A R K S ... I love my CITIZEN ... BUT: ==================================================== [#] An irritating DESIGN FLAW (against common sense !) is made with the 24-HOUR-DIAL. The upper half is bright, the lower half is dark - OK - BUT the "24" (= MID-NIGHT) is on top in the BRIGHT HALF and "12" (= NOON, DAY-TIME) is down in the DARK HALF ??? [*] A 2nd DESIGN FLAW ... The area under the CROWN has a huge free room: Everytime I take out my hanky, there is a possibility that the rim of my jeans pocket get in between and pulls & turns the crown !!! This results in change of the TIME ZONE: Therefore UNEXPECTED CHANGE OF ACTUAL TIME = OhOh! After END OF 5 YEAR WARRANTY in 2016, this unwanted wear-and-tear made the axle locked and broke. CITIZEN was not willing to sell a new axle to my repair shop: "REPAIR" by CITIZEN/USA was made for 365 US$ in exchange for a NEW CASE with a NEW_ID on its back side. May be the reason why THIS MODEL IS DISCONTINUED ??? *** ... As joked in ../SlideRules/BREITLING... ------------------------------------------------------------------- In addition to using the SLIDE RULE for multiplication & division, it is a "NAVIGATION COMPUTER". Pilots may perform all calculations a flight plan requires: Ground speed, miles per minute, gasoline consumption, rate or distance of climb or decent and conversion of nautical and statute miles. BUT: In most cases the Co-Pilot has to hold the Magnifying Glass & the FlashLight when the Pilot adjust the SlideRule ... ------------------------------------------------------------------- Have a look at the DISCUSSION ... " CITIZEN vs. BREITLING " impressum: ******************************************************************* © C.HAMANN http://public.BHT-Berlin.de/hamann 04/19/17 |