BLUBOO X550 5.5inch 4G FDD-LTE 5300mAh Android 5.1 Smartphone MTK6735 Quad Core 2GB 16GB IPS HD Miracast - Black. BLUBOO X550 is the first 5300mAh Android 4G smartphone, not only the bettery batttry, but also better battery management solution, get rid of the shadow of "low battery" with X550. OTG extended, work with flash disk, mobile HDD and more! transform to be a big mobile power bank to charge your other digital devices. Equipped with MTK6735 64bit chip, performs better and less power consumption. Bluetooth 4.0, quicker connection and more convenient. GPS, AGPSglobal positioning system. Android 5.1, the best experience for android so far! Buy this Smartphone and you can Save $21 Off For BLUBOO X550 5.5" Android 5.1 4G FDD-LTE Smartphone. With coupon code: 21x550 at checkout.