Pomelo Best Wireless Bass Speaker, 6W 2 Output with 5000mAh Power Bank, Black DSP Technology : Adjusts the EQ mode automatically according to different music style.It can make this bluetooth speaker break through the limits of many original physical / acoustic and enhance the sound quality to a higher level Power Bank: Built in rechargeable 5000 mAh polymer lithium-ion battery lasts up to 12 hours, use it as power bank to charge your devices Easy to Pair:Bluetooth version 4.0 smart connectivity Quality:Very Well Sound Quality 4/6W * 2pcs, 12w in total, high quality crystal clear sound with louder volume and more bass Built-in MIC for handsfree speakerphone phone calls from smartphones and iPhones