Description: Shaft length: 23mm, thread height 15.4 mm, suitable for panels of approximately 12mm thickness. Equipped with gold hexagonal plane nut, gold garnish, black pad. 1688 jump second movement is a first-level movement, more than 2 years life, equipped with ROHS certification. From the center hole of the pointer to the top, the hour hand is 77mm, the minute hand is 106mm, second hand 110mm, and it is suitable for the panel diameter of about 240-300mm. Material: hands aluminum, 0.4 mm thickness, hands head: copper, process: Color of silk printing. Specification: Shape size: 56 * 56 * 16.3 mm Crystal frequency: 32.768 KHz Walking accuracy: ± 30 Sec / Month at 1.5 V DC. 25 °C(unadjusted) Consumption current: Lesthan 130 μ A at 1.5 V DC. Operating voltage: 1.3 V to 1.7 V Rated voltage: 1.5 V Operating temperature: -10 °C to 50 °C Battery life(specification): Approx. 12 Months(UM-3) Weight: approximately 25 g/PCS Second hand output torque: ≤ 0.6 gf-cm(1.5 V) Needle output torque: ≤ 30 gf-cm(1.5 V) The pointer specification requires: Length / Weight of second hand: ≤ 130mm, ≤ 2G Point Length / Weight: ≤ 200mm, ≤ 6G Inequilibrium moment of the second hand: ≤ 0.15 gf-cm Inequilibrium moment: ≤ 6gf-cm Package Includes: 1 set of clock parts Note: Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.