1、9 Soothing Sleep Sounds – white noise, sea waves, crickets sound, rain sound, forest bird sound, stream sound, 3 pieces of lullabies. Sound can help you fall asleep faster, improve sleep, and let you have a good sleep. 2、Time Options-3 kinds of timing time, 15 minutes / 30 minutes / 60 minutes /. Press the \"time\" button for the first time, the sound will play 15min, press the \"time\" button for the second time, the sound will play 30min, press the \"time\" button third time, the sound will play 60min. 3、Mini Portable Design-The size only 8*8*3.4cm, mini and portable, weight only 97g. It is also very convenient to take it when traveling. The sleep machine is ideal for adults and children of all ages, which will help babies and children fall asleep overnight, with 9 soothing sleep sounds and time options for 15, 30 or 60 minutes. Features: 9 Soothing Sleep Sounds – white noise, sea waves, crickets sound, rain sound, forest bird sound, stream sound, 3 pieces of lullabies. Sound can help you fall asleep faster, improve sleep, and let you have a good sleep. Time Options-3 kinds of timing time, 15 minutes / 30 minutes / 60 minutes /. Press the "time" button for the first time, the sound will play 15min, press the "time" button for the second time, the sound will play 30min, press the "time" button third time, the sound will play 60min. Mini Portable Design-The size only 8*8*3.4cm, mini and portable, weight only 97g. It is also very convenient to take it when traveling. USB Charging-The sleep instrument built-in rechargeable 800mah and comes with USB charging cable, the sleep instrument can last 50H working after a full charge for 1 hours. Warranty-  If there are any problems, please contact our store in time. We will give you a satisfactory solution. Specifications: Item: Machine for sleeping Main material: ABS Main color: White Power: 1W(max) Battery: 3.7V 800mah Charging time: 1H Operation time: 50H Size: 8*8*3.4cm Weight: About 97g Note: * There could be some deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding. Package Information: Package size: 9*9*6.5cm Package weight: 145g Gift Box Package Packing List: 1* Machine for sleeping 1* USB charging cable 1* Instruction 1* Machine for sleeping 1* USB charging cable 1* Instruction