[Easy to Use]: Preset time 5 or 10 or 30 or 60 minutes. Just turn the so the numbered side is facing up and the start immediately. Countdown and timing can also be customized. Pause and resume, mute, vibrate and adjustable alert volume. [Applicable Scenarios]: This flip is widely used for learning, reading, kitchen cooking, work, , fitness training, yoga, etc. It is very suitable as an Perfect time management gift for children, friends, and family members. [Compact and Rechargeable]: The 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 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: mode: turn the button to mode Scroll 5-10-30-60 minutes upwards and the countdown start automatically. Scroll upwards to pause. On the contrary, the screen be downwards to clear the countdown. Manual mode: turn the button to mode Adjustable M or S key, press the middle button or SP to start the countdown Counting up: 1. When the display is 00: 00, short press the [SP or ] key to start counting up 2.During the timing process, short press the [SP or ] key to pause or start the timing 3. In the pause state, long press the [ or SP] key to clear. Countdown settings: 1. Short press the [M or S] key to adjust the countdown time incrementally, long press the [M or S] key to quickly increase the countdown time. After the setting is completed, short press the [SP or ] key to start the countdown 2.During the timing process, short press the [SP or ] key to pause or start the countdown 3.In the pause state, long press the [SP or ] key to clear 4. After the countdown time reaches 00:00, there be an alarm clock that lasts for one minute ("Didi Didi" LED screen lights up or the sound stops and the LED screen goes out - these two prompts are in groups of 1 second - this cycle) remind. Vibration reminder in silent mode. 5. Memory mode: After the countdown is over, press the [SP or ] key again to display the set time. If you need to clear it, press and hold the or SP button. Short press to cycle the operation again. Colour:black Material:ABS Size:44 x 44 x 46mm Package Contents: 1 x 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.