YutaoZ Battery Base Specially for the Echo - Make Your Echo Much Steady, Free of Adapter and Even Charge other Mobile Device with Built In Battery Amazon Echo is a wonderful device to free your hands and this Charging Cradle frees your Alexa Amazon Echo is known to use a unique 15V, not a universal DC/AC adapter cord. Its not so convenient to move around in the house, and there may not be a power source to the front porch or back yard Easy to Re-Charge the Cradle: You Can Just Use Normal 5V Micro USB to Charge the Cradle Standby Time about 8-12 Hours, Paying in Middle Volume Last about 3-4 Hours. If You Connect the 5V Input, the Cradle Will Be Always Ready Not include the Echo, ONLY the Charging Base and 2 IN 1 Charging Cord. If Want Make the Cradle and Echo 'Stick' Snugly and Fit Together, Please Check my Amazon Store or Search B017CJCI6U on Amazon Search Box