The mobile portion can be removed leaving a crib light that also plays soothing sounds and music. Soothing melodies are activated when your little dreamer cries and will play for a pre-selected amount of time. You can also choose between sing-along songs, nature sounds and melodies. Set the timer switch for 10, 20 or 30 minutes of music and sounds. Requires 3 AA batteries (new batteries recommended for regular use). Intended for babies from birth to 3 years of age.<br> <br> <b>HOW to Use baby crib mobile</b> <br> Just hang it to your baby crib or stroller, Make sure the fixture is fixed before use.fixed on the bed-caliber crib in 0.47"-1.55"<br> <br> <b>Package Included</b> <br> 5 toys and Rotating frame<br><b>Musical box and Holder arm</b> <br> Maintaining and cleaning</b> <br>Remote operation refer Images or instruction. The toys can be washable.<br> Warranty 1 year, Free repair and replacement<br>