Rechargeable 3000 mAh battery provides 13 hours of talk time. Crafted from anodized aluminum. Four-light LED battery indicator - shake to activate. USB port delivers 1.0A output. Pre-charged and ready to use. A built-in USB port provides versatility to work with any device. 2.5 hours to recharge the power bank using an AC adapter. Fast-Charging Technology, shortens charge time by 25% or more. SmartSense Technology, identifies and charges any device. High Efficiency Technology, maximizes power to your device. Includes: Recharge cable, carry pouch, quick start guide and 1-year manufacturer's warranty.