The running time of this size can be as maximum as 30 minutes. If you need a longer running time, we can make an hourglass in a larger size.
Actually, we can engrave the logo on the glass. It is high borosilicate glass, and we keep it thick enough, so the engraving will not break it.
We wrap each hourglass with polyform and a white box. This packing is our regular packing for glass hourglasses, and it is safe enough to ship by sea and air.
For other general information like the samples, shipping, payment terms, please check the FAQ page. There are great answers.