Item Type: Cube Timer Material: ABS Power Supply: 3 x AA dry batteries(not include) 1、PROFESSIONAL SHOOTING 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 4inches in size, easy to carry  3、EASY TO USE: The cube timer features three easy to set buttons that you can quickly master using the user manual  4、HD DISPLAY: Countdown stopwatch features a bright HD 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