Long Battery Life,10000mAh battery keeps your echo Dot 2nd generation work max up to 13 hours (depends on your echo dot working status) Intelligent Battery Charging Technology: supports to connect with wall charger for long time and without worry it will damage the battery,Charge protection, discharge protection, short circuit protection. Beautiful design appearance will be a decent decoration when putting in your house EASY TO SEPARATE - Easily and securely attaches to Echo Dot by a silicone tape with no interference 100% Customer Warranty.-- it is committed to 100% satisfaction of our customers, any issue with the product, please don't hesitate and feel free to contact us. We won't let our customer waste their money.