Premax 7800 mah, dual usb external power bank pmbp2290 with pmep407 headset,capacity: 7800 mah, dual usb ports, fast charging with 2 multi-devices simultaneously cable inclusive.Input dc 5v / 2a, output: 1a & 2.1a, Dimension: 60 x 22 x 90 mm, black and green color.

Unique features: power iq, high powered capacity, incredibly compact, superior quality, world famous warranty, for optimal use, 

Pmep407 headset driver unit 10 mm, frequency response 10, 28.00 hz, impedance 32 ohms, senitivity 106dB, cable 1.2m