Paratech 60 Minutes Sand Timer Hourglass Wooden Sand Clock

The packaging was done well and the product was delivered safely although it took 3 weeks. It worked amazingly well for the first 2-3 times and the timer was perfect too (flat 60 mins). Later, the sand started getting stuck intermittently and I had to gently tap the bulb to keep it going. It has now become just like a show piece and I can no longer use it as a timer.

Not flowing smoothly
Got stuck frequently
Waste of money