The blend of traditional and modern styling makes this hourglass the perfect decoration for a home office, a desk or shelf at work, or any space thats begging for a distinguishable and unique look. The base and spindles are made of stainless steel. There's more to this hourglass than its smooth design -- Its functional! The white sand inside the hourglass flows through the glass at a constant rate for 60 minutes. Its accurate to within 60 seconds per hour which is pretty incredible for technology that's over a thousand years old. Each individual hourglass is mouth-blown and comes with a two year limited warranty covered by the manufacturer.