... Specs of productTypeSweep Pendulum MovementItem no.12888Shaft length12mmSupply shaft length7, 8, 9, 10, 12, 13.5, 16.5, 18.5, 21 ... ,28(mm)Back coverTransparentMaterialABSDimension56x109x21.5mmNet weight41gBattery lifeAA/6-8 monthsTime accuracy1sec/dayPackage250pcs/ctn, with poly foam insideMeasure of carton600x340x355mmPayment ...