more about the Polar watchesMovement:automatic movement Laco 2S basic movement Miyota 82S0second hand stopCase:stainless steel case, sapphire crystalDial:white, numbers with Superluminova C3 Blue Line, blue shimmering indexesHands:thermal thermal blued hands, filled with luminous material Superluminova C3 Blue LineStrap:Brown leather strap with rivetsPlease note: the used vintage leather makes every watch strap unique. Being a product of nature, it can present itself with color and structure variations.Box:Watch box incl. cardboard boxDiameter:39,0 mmHeight::11,55 mmLug width:18,0 mmLug to lug:46,5 mmWaterproof:up to 5 ATMWeight:75 g (incl. strap)Arm circumference:15 - 20 cm