[Automatic Shut-Off & Adjustable Volume] Support 15, 30, and 60 minutes timed off setting, does not disturb baby's deep sleeping; and the volume can be easily adjusted according to actual needs. [Silicone Strap Design] Can be easily hanged on cribs, baby strollers, diaper bags, and more;  portable size, great for comforting babies when taking them out. [Battery Power Supply] Powered by 3 * 1.5V AAA batteries (not included), no need of frequent charging, quick and convenient for use. [Easy Operation & Cute Owl Appearance] Simple buttons design, easy to change songs and adjust volume; attractive cartoon shape, a nice gift and companion for kids. Specifications: Color: White and grey  Material: ABS and silica gel Power Supply: 3 * 1.5V AAA batteries (not included) Product Size: 11 * 10 * 6cm/ 4.3 * 3.9 * 2.3inch Product Weight: 180g/ 6.3oz Note: Batteries are not included, and it's not suitable for using high current batteries. The stroller and crib showed in the pictures are not included. Package List: 1 * White Noise Machine