MAQE SOUNDJUMP Aluminum Wireless Bluetooth Speaker with Removable Magnetic 6000mAh Power Bank - Black MAQE Soundjump wireless speaker features dual custom 45mm full range drivers for premium sound, Dual front & back passive radiators, DSP (digital signal processor) and a Class-D amplifier Long lasting magnetic removable 6000mAh battery/power bank for charging mobile devices 20 hours playtime, Built-in mic & speakerphone Bluetooth 4.0 for wireless streaming, Durable Machined Aluminum body. Available in Black or Grey. Designed by MAQE Easy to replace Jumpsix battery so you never have to replace the speaker or Additional battery/power bank for extra long playtime