compact and powerful best describes this must have for cell phone/mp3/camera ect. owner who wants to have a "extra battery" in the palm of there hand. first off shipping was very fast and on time and product was securely shipped and inside box was the 3200mAh unit, a short usb cable and a easy to read owners manual in 4 languages. also i liked that box contained a warranty card and powerbank has 18 month coverage which i though was very nice to know. the units lipstick size (3.46x0.88x0.88in) is perfect for the pocket or in your purse for the women and the units power source comes from LG AA Grade Li-ion 18650 battery cells and that is a big factor for me to have trusted/tested batteries. the unit has a blue led that flashes while unit is being charged and turn steady blue when unit is fully charged. i charged my galaxy S4 from 2% to full and still had a charge left in the powerbank to charge my camera from 6% to full. when connecting a device to powerbank the blue led lights up to show connection then light turns off which i like if charging at night or somewhere you don't want a blue led lighting up. i must say this is a very well constructed, very compact powerbank for under $20 its well worth its weight in gold and it really is a must have unit for on the go.