Never run out of power with the compact Pep 4,000 mAh Power Bank. This sleek, rechargeable device easily slips into your pocket or bag, delivering a quick energy boost to your smartphone, MP3 player, or other USB-compatible gadget. Featuring a high-quality lithium polymer battery, the Pep reliably recharges your devices on the go. Its included micro-USB cable conveniently charges both the power bank and your phone. TSA-friendly for worry-free travel. Recharge the Pep before your first use and enjoy lasting power wherever you go.