To overcome the limitations of traditional sand flow sauna timers, we have developed an innovative mechanical alarm clock timer for sauna and spa use. This timer offers several benefits: 1. Relaxation: You can close your eyes and relax, as the alarm will wake you up. 2. Extended Time: It provides up to 55 minutes, unlike regular sand timers that only offer 15 minutes. 3. Accuracy: The mechanical core ensures greater accuracy and reliability, preventing the timer from getting stuck like a sand timer. Product Size: 5.6 x 5.6 x 1.8 inches Material: Finnish pine frame and stainless steel mechanical movement Note: * Before setting the time, wind the timer by rotating the arrow clockwise to 55, then rotate the arrow counterclockwise to the desired time (similar to using a mechanical watch). * While not designed for precise timekeeping, please allow for a 5% to 10% tolerance in accuracy. It is still more accurate than a regular sand timer.