Due to the fact that the non-removable battery in this smartphone is quite capacious, it can be used as a power-can. For this, an OTG cable was added to the package. Plus, for example, you can burn a lot of movies on a USB flash drive, connect it to a smartphone and enjoy watching it on a long trip. True, the real tests revealed deception from the manufacturer, since the real capacity is not 5,300 mAh, but about 4,700 mAh. Of course, not as stated, but the result is still very good. With an average load, you can stretch the work of the smartphone for a couple of days; if you only use it for calls, then it will be enough for about five days.

The Bluboo X550 is equipped with the “Smart quick-charge” function, so the estimated time to full charge is 2 hours and 20 minutes.
The front side of the smartphone is made of glass, quite soiled from fingerprints. The control buttons located at the bottom of the display, but the menu button and the back button are swapped. At first, this is inconvenient, but using a smartphone for a couple of hours you already get used to this feature.

The display here is multitoch on five touches, good quality and with excellent viewing angle. Unfortunately, for its size of 5.5 inches it has only HD resolution. But this does not negatively affect the impression of working with him.
The back cover as well as the frame is made of plastic, but rather pleasant to the touch because of the Soft-touch coating. Thanks to this detail, the smartphone is quite compact and sits comfortably in your hand. What also affects the small weight of 160 grams and a thickness of 8.9 mm.

The smartphone is equipped with a fairly loud main speaker of good quality, thanks to which you will hear a notification about a call or a received message even on the subway.
There are two slots for sim-cards. The first is standard, the second is on micro sim. Both with 4G LTE support.
The built-in memory here is only 16 GB, but there is a slot for expansion with SD cards up to 64 GB.

The smartphone is equipped with a MTK6735 64bit quad-core processor, but the purity here is lowered, only 1 Ghz per core. It works on the basis of Android 5.1 Lolipop, and this is good, since this version is well licked and practically does not take up RAM.
The cameras are of average quality, the main one is 8 MP with interpolation up to 13 MP, and the front camera is 2 MP with interpolation up to 5MP.
The manufacturer put a protective silicone bumper and film for the screen. What is also a nice plus.