NEW in Box! Amazon Alexa Echo Dot Battery Base Stand in Black Compatible with Echo Dot 4th Generation and with Echo Dot 5 After Adjustment—after removing the bracket part. Not for Bigger Echo 4. FEATURES • Make Echo Dot Portable • Up to 6 Hours portable playtime • Provide your speaker with a mobile power supply, totally free your Echo Dot from being restricted by cords. • Base can be fully charged in 3.5 hours, and then you can enjoy your smart speaker wirelessly up to 6 hours (At 50% volume). • With open design, GGMM D4 battery base helps retain original audio performance. • Specially made for Alexa Echo Dot 4, portable echo dot battery pack with magnetic attachment can firmly hold the speaker. INCLUDES: echo dot battery base & user manual. Echo dot and power cord not included.