With a minimalistic design weighing in at only 7.1 oz and providing up to 2 extra charge for most smartphones, the Luster Battery Pack is essential for keeping your devices powered throughout the day. iSmart technology automatically detects and delivers the optimal charging current for any connected device- ensuring the fastest and most efficient charge. The Luster charger is perfect for a stocking stuffer and comes in 4 bold colors: Gold, Black, Blue and Pink. Currently receiving 4.5 out of 5 stars from over 1,500 people (read reviews) on Amazon, and the listed price of $50 has been reduced 70% to just $15. See it on Amazon now.