Calibre Sellita SW261-1 MOVEMENT Automatic FUNCTIONS HMS POWER RESERVE Around 38 hours CASE MATERIAL Stainless steel CASE DIAMETER 39 mm CASE BACK See through GLASS Bombed sapphire with anti-reflective treatment on both sides WATER RESISTANCE 5 bars (50 m/165 ft) DIAL Matt ice blue with circular satin-finished zone, snailed counter at 6 o'clock with diamond-cut zone, anthracite transfers, glossy blue indexes HANDS Polished blue signature fir tree hands BUCKLE Pin buckle STRAP DIMENSIONS 20/18 mm, 80/115 mm