You can set any time from 1 to 30 minutes. After selecting time, the hourglass starts counting. On the other side of the hourglass is the charging port. Attention: We provide charging cables and detailed operating instructions This is a beautiful electronic hourglass, a decorative gift. adopts a double-layer designs, and the circuit is compose of 128 LED light. Under the control of the microcontroller program, display the hourglass. The brightness is adjustable and can also be used as a decoration for small night light This innovative device use LED display to visually track the passage of time, similar to a traditional hourglass. However, it also combines sensings mechanism to detect instructions, increasing interactivity and functionality The electronic hourglass is a unique fusions of time management and modern technology. This eye-catching timer is not only a fashionable decoration, but also perfectly combines form and function This is a relaxing toy. When you gaze at the flickerings light, you will feel interesting and relaxed. It is crafted from