Stainless steel, comfortable: The anti-key surface is scratch-resistant, the stainless steel waterproof cover makes it extremely durable, and the smooth polished stainless steel strap provides a wear-resistant and comfortable wearing experience. Core: automatic machine motion, analog display Men's women's wear is known for luxury brands and luxury gifts! Features: waterproof, shockproof, full calendar Case diameter: (male is about mm, female is about 26 mm) Bandwidth: (about 20 mm for men and 15 mm for women) Nail thickness: (about 11 mm for men and 10 mm for women) Watch weight: (about 135 grams for men and 70 grams for women) (The size is measured by hand, there may be an error of 1cm-3cm, for reference only. Please understand) Two watches in the handbag: men's and women's watches Package: Gift Box Special note: Fully automatic mechanical watch, relying on arm movement and automatic winding, so you must wear more than 8 hours a day to ensure timely and accurate. Some automatic mechanical watches on the chain can also be connected manually, supplementing the energy by rotating 25 turns clockwise without pulling the button. Warning: Observe the pointer until 8pm. At 4 am the next day, please do not adjust the calendar slowly, press the speed dial button and press to quickly adjust. Otherwise, the calibration will be invalid and will result in a speed dial button and the damage will be destroyed. The mechanical watch should be away from the TV, computer and other things with magnetic fields, so as not to affect the work of the watch. How to use: Mechanical watch, powered by manual winding spring or self-winding (no battery required). 1. When wearing for the first time, turn the button on the side of the watch until the watch is full. 2. With a slight press of the button, you can adjust the time and then press the button.