Features: Lazy alarm clock function: you can set 1-5 groups of alarms at will, each-ring for 60 seconds; This function suitable for ordinary alarm clock users, especially for lazy people, can be set five consecutive one-minute reminder. Countdown function: maximum countdown 23 hours 59 minutes; After the countdown finished, 60 seconds of time alarm, memory function, after the alarm will automatically return to the set countdown time; In the noise press any keys, BB- stop, automatically return to the set countdown time, press the "M-S" keys, you can conduct the next time, very convenient to use, this function especially suitable for telecommunications, banking, catering and other industry need limited time service. Randomly set the interval time and countdown time of five sets of alarm. All the five groups have 60 seconds of sound noise. Clock time system: 12/24 hours convertible. Specifications: Material: ABS, Electronic Component Size: Approx. 5.6x2.2x8cm/2.20x0.87x3.15in Package Includes: 1x Timer note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.