New but opened box. Box has minor wear & tear. Make your Echo portable with the Mission Battery Base. Certified “Made for Amazon” accessory specifically designed to work with Echo (4th generation). Seamlessly attaches to the Echo base (4th generation) without tools. Enjoy your music away from electrical sockets with an integrated battery lasting for up to 5 hours. Not compatible with previous generations of Echo (1st, 2nd or 3rd generation). Not compatible with Echo Dot.
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