4 Charges for iPhone X: High capacity 12000mAh, it is powerful enough to charge the iPhone7 about 5 times. Pokemon Go drains your battery, imagining, you almost catch the elf and it suddenly out of power, how distressed it is! DULLA can provide an extra 30-hours of playing time. Safe to Charge: Intelligent power manage IC, supports over-charged, over- discharged, over-voltage, over-current and short circuit protection, perfectly protects your digital devices from charging accident. Super-fast charging: Dual USB(5V 2A & 5V 2A) Ports allow for charging of your devices simultaneously and quickly. Charge compatible devices up to 75% faster than standard chargers. Not match Samsung fast charging.