The product material is strong, durable, long service life. It can be used as spare parts to facilitate the replacement of your movement. Double calendar movement, high precision. Name: mechanical watch movement Type: NH35 / NH35A Note: The movement is a special precision product, it is the need to repair the table technology to operate people, not understand people to find a table repair master, so as not to damage the movement caused by a waste. color:White Material:Metal Package Contents: 1 x Watch Movement Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.