Electronic sleep device

Product parameters:Product size: 17.8*14*14CM (length x width x height)Built-in lithium battery: 2000MAHPower supply: DC5V/2ASpeaker: 4Ω*3W internal magnetic speakerUSB interface: Micro-USBThree timing modes of 15 minutes, 30 minutes, and 60 minutesFor people:People with insomnia, middle-aged people with sleep disorders, teachers, students, ladies, IT workers, designers, business elites, long-term computer users, frequent business travelers, pregnant mothers who are anxious during pregnancy, babies who have difficulty sleeping, etc.