Long press the switch to turn on the productivity timer, short press the switch for about 1 second after turning on the pomodoro timer to change ringing or vibrating mode. Flip the timer with the preset time number face up, the timer will count down automatically. The LED light will stay on during the entire process and blinks to alert 10 seconds before the countdown ends. To reset a new time, flip the timer again. Productivity cube provides 1 / 3 / 5 / 10 / 15 / 20 / 25 / 30 / 45 / 60 / 90 minutes, total 11 time presets. Flip the cube timer to the preset time you want in accordance with the length of the activity, which requires less time setting compared with ordinary timers. This timer is compatible with learning, cooking, reading, exercise, brushing teeth and etc. Focus timer provides ringing or vibration modes. Choose the right mode according to time and place to avoid the timer's ringing from bothering others, especially in quiet places such as offices or libraries, vibration mode is available. Use ringing mode when projects require special attention or urgency. Desk timer for productivity has a rechargeable battery and USB-C charging port, no need to replace the battery, to avoid wasting time and money on buying extra batteries. The task timer has an LED indicator to show power status, red light for low power, blue light for full power, allowing you to grasp the status of the timer at a glance. The size of the time timer is 57*56.5*47MM, battery capacity is 450mAh. It is exquisite and compact, can be put into backpacks, sport bags, hand bags or clothes pockets. You can take it to travel, meetings, games, learning, sports, cooking and other activities. The time timer helps you allocate time wisely.