Optimize the performance of your timepieces with the NO.1900 Professional Timekeeper, an essential tool for watch enthusiasts and professionals alike. Designed with a compact case size of 185mm x 95mm x 130mm, this watch calibrator allows you to conduct precise measurements in a user-friendly format. The visible size of 95mm x 54mm enhances visibility, enabling you to monitor your watch's performance effortlessly. This calibrator offers a range of test items including daily difference, pendulum amplitude, polarization, beat, rise angle, and period day difference measurement, ensuring comprehensive analysis. With a daily difference measurement capability of +999s/d and an accuracy of 0.1s/d, you can trust the precision of your readings. The pendulum amplitude measurement ranges from 100° to 360°, while polarization can be measured from 0 to 9.9ms, catering to various watch specifications. Weighing only 330g, the NO.1900 is portable and lightweight, making it convenient for both home use and travel. Its wide supply voltage range of 100V to 240V ±10% ensures compatibility across different regions. The accompanying microphone, constructed from durable zinc alloy and aluminum, further enhances your calibration experience. With a size of 115mm x 90mm x 100mm and a weight of 568g, it is designed for stability during use. Included in the package is a power adapter with a compact design (49.5mm x 34.6mm x 25mm) and a 1.5m cable length, allowing for flexible positioning while you work. The power adapter outputs 121A and operates within an input of 100-240V, 50/60HZ, 0.35A max, providing reliable power for your calibrator. With the NO.1900 Professional Timekeeper, you can enhance the longevity and performance of your timepieces, making it a valuable addition to any watchmaker's toolkit or collector's workshop. Experience the difference in precision and reliability today.