Seiko Prospex SNJ029P1 Movement Caliber Number H851 Movement Type Solar Accuracy ±15 seconds per month Exterior Case Material Stainless steel(hard coating) and plastic Crystal Hardlex LumiBrite LumiBrite on hands, indexes and bezel Band Material Silicone Other Details Water Resistance 200m / 660ft diver's Case Size Thickness: 14.4㎜ Diameter: 47.8㎜ Length:50.5㎜ Weight 114.0g Other Specifications Screw case back Screw-down crown Unidirectional rotating bezel Alarm function (daily alarm) Battery life warning function Chronograph up to 100 hours in 1/100 second increments Full-auto calendar correct to the December 31, 2100 LED (the built-in illuminating light) function Power save function