Easy To Use-Long press switch to turn on productivity timer,short press switch about 1 second after turn on the pomodoro timer then can change ringing/vibrating mode.filp to timer make the preset time (number) face up,timer will be countdown automatically.the LED light will keeping lighting in the entire process and blinks to alert 10s before countdown end.if need to reset new time only need to filp timer again. 11 Preset Time-Productivity cube provides 1 / 3 / 5 / 10 / 15 / 20 / 25 / 30 / 45 / 60 / 90 minutes total 11 time presets, in accordance with length of the activity to flip the cube timer to the preset time that you want, less time setting compare with ordinary timer.it's more simple and more easy.perfect for learning, cooking, reading, exercise, brushing teeth and etc. Ringtone + Vibration Alert-Focus timer provides ringing/vibration modes, according time and place to choose right mode, avoid timer's ringring to bother others ,especially in some quiet places such as office or librariy (vibration mode),we recommend use ringring mode when project require special attention or urgency. Typc Charging- Desk timer for productivity has a rechargeable battery and USB-C charging port, don't have to replace the battery,to avoid waste valuable time and money to buy extra batteries,task timer has an LED indicator to indicate power situatio, red light (low power), blue light (full power), Allow us grasp the status of the timer at a glance. Compact Size, Easy To Carry-The size of the time timer is 57*56.5*47MM, battery capacity 450mAh, exquisite and compact, easy to carry and can be put into the backpack,sport bag,hand bag or clothes pocket.we can take it everywhere,such as travel, meetings, games, learning, sports, cooking and other activities,time timer help us allocate time wisely. Warm NOTE: Christmas is coming and we will include a Christmas card that you can give to your friends or family as a Christmas giftBy the way: Merry Christmas