Alienwork IK Automatic Watch Self-winding Skeleton Mechanical Stainless Steel black black 
 
automatic movement (Daily using, temperature and shocking affect the accuracy of mechanical watches. Manually adjusted is necessarily and effectually to reduce the deviation.)
Color and light transmission of photochromic glass automatically change with sunshine intensity. The color of dials becomes different with itself when viewing from different angles and in different light via photochromic glass.
Beautiful glass back of the watch for view of the movement
Mineral glass and luminous hands (The darker night becomes, the lighter luminous hands change)
Water resistant to 1 ATM, suitable for light spay, perspiration and light rain