Made for Amazon Battery Base, in Black for Echo Dot (4th generation) Not compatible with previous generations of Echo or Echo Dot (1st Gen, 2nd Gen, 3rd Gen or 5th generation).

Make your Echo Dot portable with the Mission Battery Base.
Design blends elegantly with Echo Dot without compromising audio performance.
Accessory specially designed to work with Echo Dot (4th Gen). Echo Dot sold separately.
Enjoy your music away from the power outlet with integrated battery lasting up to 5 hours.
Compatible with Amazon Echo Dot 4th generation. Not compatible with other generations of Amazon Echo Dot or the larger Amazon Echo.
Included in the box: Battery base and quick start guide.