Ideal Gift Choice for Kids: 30 days 100% money back guaranty, 12-month replacement warranty,12-hour Customer-friendly Support Service. Please note: The FM radio (SD Card) function maybe can't work right, if you mind it very much, please do not order it. (Age 1-3 Over Ear; Age 3+ On Ear). High Compatible With Most Device: Standard 3.5mm audio jack suitable for listening to music or audiobooks. Quickly pairing with the most Bluetooth devices device: for iPhone for iPad/ Android Cellphones/ PC and Tablets. Crystal stereo sound-40mm dividers, produce high-quality sound, create an amazing experience. Comfortable and Collapsible Design: The adjustable headband gives the headphones some impressive flexibility, so they can adapt to the shape of your head for a perfect fit.Soft ear cushions and long-wearing comfortable without stress, fit for growing teens even adults. It's your kid's great travel partner, let your little ones enjoy the journey without bothering you. Multifunctional Bluetooth Headphones: 16 hrs playtime Bluetooth headphones(hands-free calling) / TF card music player (Not including TF card) /AUX-IN.Your little ones can listen anytime in both a wired and wireless capacity. The wireless design is handy for avoiding tangles, a favorite feature of the big-kid panelists. However, the cord is detachable, minimizing a toddler's risk of getting snagged, but the volume restriction of wired headphones is normal. (Switched 85dB :Kids to 110dB :Aldult )(12-month replacement warranty)Hearing Protection: MIDOLA Kids' (Age 2 Years+)headsets protect your kids from hearing hurting when they play for a long time with 85dB of limited volume(the level the World Health Organization considers safer). The volume can be switched from 85dB (Kids)to 110dB (Aldult ) when you press and hold pause/play button 3 seconds. (Age 1-3 Over Ear; Age 3+ On Ear).