B012B SPACE TRAVELLER series Mat Black Dial edition is a mechanical wristwatch we have developed base on the inspiration from the revolution of planets. From which a Miyota Cal.9015 automatic movement (one of the most stable and reliable mechanical movement in the market) has been used as a base for power source and then we installed a mechanical module which we have designed, developed, and constructed completely in-house based on a satellite system (for satellite time display function). The time display function is by the 2 sapphire discs (one for displaying hours and one for displaying minutes) which rotate by itself alongside with the whole mechanism revolutionary to display accurate time with a luminous plate underneath that glow in the dark. Furthermore, we have designed a metal circle frame (in the center) that rotates to indicate the time in seconds with luminous on the surrounding that glow in the dark. Each of these watches has been fully tested for weight balancing and have achieved a minimum of 42 hours power reserve.