Nv-gu 10400 mAh External Battery Power Bank, IP67 Waterproof and Shockproof with Quick Charging, Dual USB Portable Charger Backup Pack for iPhone , Android, iPad and Any Devices SUPER FAST CHARGE OUTPUT - Smartly identifying different mobile devices' matchable current for faster charging .Dual USB output: Fast charge two devices simultaneously (USB Output 1: 5V/1.0A, USB Output 2: 5V/2.4A),Input 5V/2A IP67 CERTIFICATE - Rain-splash design ensures the device function smoothly when it's raining; shock-proof feature ensures the device work properly even it crashes or drops ADVANCED POWER BANK - Exquisite and portable, handheld size but high capacity (10400mAh) while 4 status LEDs keep you informed of remaining capacity. That is perfect for smartphones, tablets and portable electronic devices INTELLIGENT SAFETY PROTECTION - Supports over-charged, over-discharged, over-voltage, over-current and short circuit protection, more safe to use. With such massive capacity, in such a compact package, perfect for hiker, camper and outdoor enthusiasms. EASY TO CARRY - It is not just a product. It is a companion that you will use every day. The product is so much compact designed that it could be very easy to hold and put anywhere you want, hangs on a bag or even a pocket.