Learn Skills 85% of what we learn, we learn by listening and listening to audio increases reading accuracy, improves comprehension, provides context and helps children decode words and comprehend text better. Improve Sleep Experience ZenShield, a selection of soothing sounds to help children calm down, relax and even sleep. Boost Creativity Reduce screentime with engaging, screen-free audio entertainment for kids and enrich their imagination, culture and vocabulary. Product Features StoryShield Playback Bluetooth + Wired Audio Playback Connects with Companion App 75/85/95dB Volume Limit Settings Built-in Microphone Foldable & Extendable Headband What's included StoryPhones ZenShield PlayShield USB-C Charging Cable 3.5mm Audio Cable Drawstring Travel Bag User Manual Tech Specs 3.5mm jack audio in/out Internal microphone Volume limit settings 75/85/94dB Audio sharing 40mm diameter size driver Built-in Internal Memory Wi-Fi, Bluetooth 5.2 Class 2 & BLE USB-C charging Multi-Axis MEMS Accelerometer 600mAH Lithium battery