Leapfrog Headphones   Hours of included activities include guided adventures, challenges, mindfulness and relaxation activities, plus dance, learning and instrumental music. Included 14-page Adventure Passport guides you through audio adventures with detailed illustrations and has a list of songs and activities.   Features Connect your own devices wirelessly using Bluetooth wireless technology or wired with the included audio cable and listen to your favorite music, podcasts and more Over-ear design is comfortable and provides great sound quality at safe volume levels Intended for ages 4+ years; rechargeable lithium-ion battery included