1、Timer: Suitable for sports, fitness, cooking, sports, games and other activities. 2、Multiple choices: Preset time includes 15, 20, 30 and 60 minutes to meet different needs. 3、Easy to use: Just flip it over and start using it quickly and easily. 4、Easy to see: Large, clear numbers that can be easily read. 5、Energy saving: Digital timers have on / off switches to help save power. Timer * 1 English manual * 1 Material: ABS + electronic components Size: about 6 * 6 * 6cm / 2.36 * 2.36 * 2.36 in Power: 2 * AAA battery (not included) Specifications: 4 time planes (15 minutes / 20 minutes / 30 minutes / 60 minutes) Instructions: 1. Turn the side of the time you need up. For example, 5 minutes means that the number 5 is facing up, the timing starts and the remaining time is displayed. 2. When the time is up, the time display will show 0:00, and at the same time, Didi will start to ring. 3. Turn the O side of the circle (that is, the stop key) upwards, and the ringtone will stop immediately.