Spotlight 1.Compact and Well-Fitting Design: our portable charger is almost the same size as the Dot 3rd, only increases by 2.5 cm in the height to avoid making Dot smart speaker bloated and bulky, makes it truly lightweight and portable. You can take it with you wherever you go without being constricted by cables and power adapter. 2.No Interference In Sound Quality: the smallest portable battery charger in the market, you are able to unplug it and move it to anywhere. The open design ensures that there will be no blockage or interference in sound quality, it also plays a role to revent the smart home speaker from scratching and sliding. Extended Battery Capacity With 5200mAh battery capacity, you can set free your echo dot; get rid of the cable trouble; make your life more convenient. --At max volume: 6 hours playing time --At 50% volume: 7 hours playing time --At standby mode: 15 hours when echo dot 4th gen is turned on without playing or paused. Note Does Not Include The Echo Dot Speaker and Charger Batt