Sleep peacefully with the Homedics SoundSleep Ultra-Portable Rechargeable Sound Machine as it fills your room with relaxing, natural sounds. The mini sound machine features a rechargeable lithium-ion battery with up to 12 hours of battery life. The integrated auto off timer can be set for 15, 30, or 60 minutes as it lulls you to sleep each night. SoundSleep designed this white noise machine to be small, lightweight, and portable. Weighing 8.8 ounces and measuring only 5.9 inches on its longest side, it enables you to bring it wherever you go. Listen to your sound machine for sleeping wherever you are and get a good nights sleep. Perfect for meditation, napping, relaxing, and studying. The Portable Sleep Machine has 12 total sounds, including Fan, Ocean, Energize, Rainforest, Thunderstorm, White Noise, Zen, Brook, Campfire, Dockside, Gentle Rain, and Everglades. Choose a different sound for your different moods. Homedics SoundSleep sounds are created to mimic the natural environment and provide the most relaxing experience for you. It also makes the perfect baby sound machine and baby registry must-have. The rhythmic sounds instill a feeling of comfort that lulls those of all ages to sleep.