spec_8N24

 (1)BASICSPECIFICATIONCALIBRELigneSize*mmTotal heightVibrationfrequencyMainspringwoundingdirectionJewels󰀀󰀀8N24AUTOMATIC SKELETON MOVEMENT󰀀󰀀󰀀8N2411-1/2•26mm5.55mm21600times/hourLeft rotation21 Jewels(2)TIME PERFORMANCE•Accuracy of the mechanical watch is different from the daily rate of the quartz watch and the accuracy will change maximum of several ten seconds during rewinding the spring, then the accuracy of the half winding condition will be different from that if full winding condition.CALIBREStandardTimePerformanceAccuracyPosturedifferenceDuration time8N24-10•+30 seconds•dayUnder 30 secondsMore than 40 hoursAccuracyMeasure within lapse of 10•60 minutes from full winding. Posture differenceMeasure accuracy in 4 different postures shown on theright picture within lapse of 10•60 minutes from full winding.•Direction of 4 postures••Date Dial Up •6 o'clock up••9 o'clock up••3 o'clock upDuration timeIn automatic winding, measure the operating time after winding the mainspring by themainspring winding up device (60 minutes) and leaving itself on natural condition with posture.•When setting the movement to the mainspring winding up device, set the direction of the mainspring winding up device and the mainspring winding direction in the same direction.•If oscillating weight makes 116.5 rotation, ratchet wheel rotates once. And when ratchet wheel rotates 7.5 times, mainspring becomes full winded. So to full wind the mainspring, rotating the oscillating weight for 116.5×7.5=873.75 times is needed. Check the time of the rotation of oscillating weight on the rotation speed of below 40 rpm of the mainspring winding up device. 60 minutes time is given considering the rotation loss.(3)Function Automatic winding and the one side mainspring winding up system••••(4)Operation MethodWinding the mainspring, adjusting the hand, day/date is done by the below procedure.date adjustment→day adjustment→hand adjustment(1) Winding the MainspringAutomatic winding watch can also be hand winded by turning the crown in “A” position.Wind 15～20 times. It will start to move naturally after shaking slightly.(2) Adjusting handRotate the crown in “B” position and set the standard time.Then check if it is morning or the afternoon and adjust correctly.　 ABTime adjusting Mainspring winding(7)Separated PartsPARTS NAME8N24WINDING STEM065-212 x 1CASING CLAMP082-060x 2SCREW FOR CLAMP924-460x 2SCREW929-250x 2This specifications might be changed without prior notice.