1. PROFESSIONAL TIMER: Can be used as a countdown stopwatch, sets two sets of preset times, and sounds an alarm at the beginning and end of the preset time 2. PRACTICAL AND PORTABLE: The timer also offers a variety of functions, including adjusting brightness for the scene, and is 1.4inches in size, easy to carry 3. EASY TO USE: The cube timer features three easy to set buttons that you can quickly master 4. HD DISPLAY: Countdown stopwatch features a bright HD 1.4in high digital display that can be seen from dozens of feet away 5. APPLICABLE SCENARIO: Time cube is perfect for private occasion such as chess casino table games and is perfect for gifting Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color:Green Material:plastic Package Contents: 1 x Cube Timer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.