Seiko Prospex Street Series \'Tuna\' Solar Black Dial Green Silicone Strap Men\'s Watch SNE543P1 The Case: The Seiko Prospex \'Tuna\' SNE543P1 encapsulates the true essence of a tool-orientated watch, as it is defined by its bold over sized dimensions and functionality. The SNE543P1 is made from a stainless steel and silicone. The large circular case measures 47mm in diameter and its resemblance to a tuna can is why this watch is affectionally referred to as the ‘Tuna\' by Seiko fans. The case is also comprised of a stainless steel bezel with easy-to-grip edges. These knurled edges of the bezel allow the wearer to utilise the uni-directional rotating bezel easily. A 60-minute scale is displayed on the bezel too, while a luminescent pip is present at the 12 o\'clock mark on it. Another characteristic of the watch that is similar to the \'Tuna\' is the protective green shroud. On the edge of the case there is a screw down crown besides the 4 o\'clock marker, which has been positioned there to allow for maximum comfort when on the wrist. Two push buttons are also placed besides the 8 o\'clock and 10 o\'clock markers. The Dial: The ‘Tuna’ features a textured black dial that consists an uncomplicated layout to allow for maximum readability. The watch appeals to the conventional, understated aesthetics of the tool through the adoption of bold baton-style indices and a baton-style handset. Both of which have been filled with a luminescent material, which allows the dial to be read in the dark. Additionally a subtle date window replaces the 4 o\'clock marker. The Strap: The dark military green strap is made from silicone and it is comes in an accordion style. It is perforated which permits breathability and comfort. Silicone are water resistant and easy to maintain, which are to essential tool watch qualities. The Seiko wave logo also has been pressed into the strap. It fastens securely through the use of a standard silver buckle. The Features: This Seiko Street Series \'Tuna\' is solar powered and uses V157 calibre movement, which has a power reserve of ten months when it is fully charged. The solar quartz mechanisms offer an astounding accuracy of -15/+15 seconds per month, in comparison to the standard accuracy of -15/+15 seconds per day. The watch also offers a number of different functions such as an overcharge prevention function and a quick start function. If you have any questions please  click here Click here to join our  facebook  and  Instagram !