Feature:1. LED LARGE SCREEN DISPLAY: This classroom timer is equipped with a large LED screen display, which can be clearly read from any angle and improve classroom efficiency.2. 2 TIMING MODES: Supports positive and countdown mode with memory function. When the countdown reaches 00:00, pressing any button on the top of the timer will return to the last set time.3. VOLUME ADJUSTMENT: This classroom countdown timer supports high, low and mute volume adjustment function, which can be adjusted according to actual needs.4. MULTIPLE USE METHOD: It can be fixed by hanging, bracket or magnetic suction, which is more convenient and flexible to use, adapting to different layout and use needs.5. ENERGY SAVING AND POWER SAVING: You can choose the constant light mode or power saving mode to save energy. Meanwhile, the large button design is easy to press and operate, simple and easy to use.Specification:Item Type: Classroom Timer Material: ABSProduct Size: Approx. 90x65x25mm / 3.5x2.6x1.0inBattery: 3xAAA Batteries (Excluded)Timing Range: 99 Minutes 59 Seconds Countdown, Positive TimingVolume Adjustment: High, Low, Mute.Package List:1 xClassroom Timer 1 x Instruction Manual