The Mipow Power Tube 3000 mAh Battery is a portable power bank that enables you to charge your iPhone or iPod when you’re on the go. With a built-in Lightning cable, you can easily charge your Apple device without having to carry around additional cables. Power Tube 3000 can also connect wirelessly to your device via the Free JuiceSync app, which allows you to read the gauge battery life, temperature, and distance between the charger and your device. The app can also alert you when it’s time to recharge the Power Tube, or when it exceeds the pre-set temperature. Additional features include - Selfie Click: Double tap Power Tube button for photo-taking assistance and Find Me Function - enables you to find your Power Tube within a 20-meter range.