Square Timer,Rotation Timer,5/10/30/60 Minutes and Custom Countdown,Productivity Timer,For Tasks,Work,Study(Black) [Easy to Use]: Preset time 5/10/30/60 minutes. Just turn the timer so the numbered side is facing up and the timer will start immediately. Countdown and timing can also be customized. Pause and resume, mute, vibrate and adjustable alert volume. [Applicable Scenarios]: This flip timer is widely used for learning, reading, kitchen cooking, work, meditation, fitness training, yoga, etc. It is very suitable as an Perfect time management gift for children, friends, and family members. [Compact & Rechargeable]: The timer measures 1.73x1.73x1.73 inches, fits in the palm of your hand, and weighs only 1.68 ounces. It's portable and fits into any pocket or bag. It's rechargeable with a durable lithium battery and USB-C charging port, saving you the extra cost of buying batteries and taking a step towards the environment [Simple Design]: The most beautiful tones, cubic design. Great for home decoration. Product operating instructions: Gravity mode: turn the button to mode Scroll 5-10-30-60 minutes upwards and the countdown will start automatically. Scroll upwards to pause. On the contrary, the screen will be downwards to clear the countdown. Manual mode: turn the button to mode Adjustable M/S key, press the middle button ST/SP to start the countdown Counting up: 1. When the display is 00: 00, short press the [SP/ST] key to start counting up; 2.During the timing process, short press the [SP/ST] key to pause/start the timing; 3. In the pause state, long press the [ST/SP] key to clear. Countdown settings: 1. Short press the [M/S] key to adjust the countdown time incrementally, long press the [M/S] key to quickly increase the countdown time. After the setting is completed, short press the [SP/ST] key to start the countdown; 2.During the timing process, short press the [SP/ST] key to pause/start the countdown; 3.