Kids will love the bright pink color and changing lights, while parents will enjoy the safety and control features of the kids wireless on-ear headphones from Philips. To keep the developing hearing of your children protected, the 32mm drivers are limited to a volume output of 85 db. Number of Batteries: 1 Included: 1 Owners Manual(s) Features: Built-In Microphone, Adjustable Headband, Wireless Battery Type: Lithium Ion Impedance: 32 Ohms Manufacturer Warranty: 1 Year Parts Limited Power Source: Battery (included) Measurements: 7.1 Length/Inches, 1.8 Height/Inches, 5.7 Width/Inches Minimum Frequency Response: 20 Hertz Maximum Frequency Response: 20 Kilohertz Weight (lb.): 0.6 Lb Country of Origin: Imported