①. Product size: 93 * 80 * 28 mm. ②. [Parameters] Input voltage: DC5V = 0.5A, power: 1W, Battery capacity: 300mAh, use time: 23 hours, charging time: 1 hour. ③. A total of 10 songs, including sleep - inducing music: white noise, lullaby 1, crickets chirping, waves, clocks, birds chirping, heartbeat, lullaby 2, running water, lullaby 3. ④. 10 sleep sounds without loop - white noise, ocean waves, birds, heartbeat, clocks, crickets, running water and 3 lullabies. ⑤. This special gift with great love gives peace of mind and is suitable for babies, children and adults. ⑥. 3 timers - you can set it for continuous playback or set an automatic 15, 30, 60 minute stop timer. ⑦. Compact design and memory function - with 9.3 x 8 x 2.8 cm, it can be easily put in your handbag or suitcase, suitable for home, office or travel. ⑧. Not only for sleep -- the white noise speaker can drown out noise and help relax the body and mind. It is suitable for use at home, office, dormitory, baby's room or anywhere you want to rest.