tough smartphone with an exclusive design
Protection standard
Li-Pol, 3000 mAh (built-in)
Operating system
Android™ 7.0
MTK6737Т, 4 core, 1,5 GHz
5'' (1280*720) Corning Gorilla Glass 3
ROM: 32 GB
View all specifications
Where to buy

The ultrathin protected Sigma mobile smartphone with the rounded edges of screen and the back panel of housing, performed in style City casual.


Smartphone’s housing is designed in accordance with the IP68 standard, which allows it to be used in extreme conditions. The X-treme PQ52 is as high possible as protected against an ingression of water, dust and dirt. The traditional damping titanium plate inside is used to further fix the components, which reinforces the construction and is an additional protective factor in case of accidental falls of the smartphone. 

Design and ergonomics

An exclusive original housing design marks the X-treme PQ52 from other protected smartphones.

Neither rough lines nor hint of brutality – just style, sophistication, elegance.

An incredibly pleasing feeling of warmth and smoothness from the surface is made possible by the use of polymer composite materials in a housing and 2.5D screen glass with rounded edges.

Henceforth security may look brilliantly. The side faces of the smartphone are neatly trimmed with a thin rubber bumper that performs a protective function against accidental falls as well as ingression of water and dirt inside. 


X-treme PQ52 smartphone operates on quad-core processor MTK6737T with 1.5 GHz clock frequency, running Android 7.0. OS. Pure Android and Google Mobile Services certification allow users to be sure that the system and smartphone have been prepared by manufacturer in accordance with Google’s recommendations.

On the board of the smartphone provided for 3GB of RAM and 32GB of ROM for downloading various games, applications, and as well as for storing a large number of photos, audio and video files. Additional memory increasing is possible due to use micro-SD cards up to 32 GB. One of the SIM card slots is used for this.

Photo and video

A 5 MP front camera with flash allows you take high-quality and bright selfies and communicate online with friends via messengers. A main camera with Samsung S5K3L8 module with flash and the support of phase autofocus allows you to receive clear and focused photos and record video.


X-treme PQ52 is equipped with a 5-inch color screen with an IPS matrix of HD format with 1280×720 pixel resolution. The protection of screen is provided by a glass of increased resistance to scratches called Gorilla Glass 3 and an additional protective screen applied on the display.


A built-in rechargeable battery of 3000 mAh allows you to actively communicate and use the necessary applications within a day.

Communications and Internet 

Wi-Fi module provides an access to wireless Internet. The support of operation high-speed 3G/4G networks is ensured by two slots for SIM cards of nanoSIM standard. Travelers and automobilists will come in handy a built-in GPS module with GLONASS support, which provides determining of place location and gives opportunities to use navigation programs.

X-treme PQ52 is a smartphone for those, who try to have the maximum protection while impressing with style and sophistication.

Protection standard
IP68 (* 6x-protection against dust, sand and dirt particles, * x8- protection for long (up to 30 minutes) immersion in water to a depth up to 1,5 m.) Full waterproof .The device can work in submerged condition). This standard does not provide shock-proof. Due to additional seals and strong attachments, the phone has increased vibration resistance, but requires caution in use.
Operating system
Android™ 7.0
certified by Google Mobile Service
Mediatek MTK6737T, 4 core, 1,5 GHz
SIM type and quantity
2 nanoSIM or nanoSIM+microSD
GSM 850 900 1800 1900 MHZ;
WCDMA 850 1900 2100 MHZ
5" IPS, HD (1280x720)
Gorilla Glass 3 -high resistance to scretches
ROM: 32 GB
Memory slot
microSD (up to 32 GB)
main: 13 Mpx with flash (Samsung S5K3L8)
front: 5 Mpx with flash
Location detection technology
802.11 b/g/n, WiFi Hotspot, WiFi Direct
OTG function: mouse, flash-disk, ability of charging other devices
Rounded edges of screen and the back panel of housing
On-screen control buttons
Li-Pol, 3000 mAh (built-in)
Headphone Jack
3,5 mm
Connector for charger
144*74*10 mm
178 g
Housing materials
polymer composite / rubber
Housing color
In the box
Smartphone X-treme PQ52, USB power adapter, USB cable, Wired Headset, Quick Start Guide (UA/EN), User manual (UA/EN), Warranty card
18 months
Sigma mobile reserves the right to change the divice technical specifications and configuration without notice.
User manual (UA)
User manual (EN)
Conformity certificate (UA)

Sigma mobile company guarantees a high quality and faultless functioning of their devices upon conditions of careful usage and considerations of exploitation rules.

After the expiration of device’s service term, we advise you to contact the Authorized Service Center for preventive maintenance and receiving recommendations for the further exploitation of device. In order to prevent possible misunderstandings, it is preferable to keep the documents that are attached to the device upon its sale (sale receipt or cashier’s receipt, instruction of exploitation, warranty card) during the service term. A warranty card establishes warranty liable for device to the extent, provided by the Law of Ukraine On protection of consumer’s rights.

Warranty conditions

  • A warranty provides free repair or replacement of the device during the warranty term. Warranty service is only provided in the presence of a valid warranty card and fiscal check.
  • The renewal of software is a technical maintenance of the product and is not considered as repair and thereforeis not a valid reason for a replacement or a refund;
  • The Periodic service of device (replacement of batteries, cleaning, etc.) is carried out by request for an additional fee.
  • The warranty term for main devices and accessories is set by Sigma mobile with reference to from the date of device’s sale (look at Table 1).
  • Service term is established by Sigma mobile company in reference to the date of the device’s purchase (look at Table 1).
  • Warranty service is provided exclusively at  Authorized Service Centers in Ukraine. The sheet of service centers may be changed



Warranty terms

Service term

Mobile phones series X-treme Main deviceEighteen months

Three years

Mobile phonesMain deviceTwelve months
TabletsMain deviceTwelve months
Action camerasMain deviceTwelve months
Bluetooth headsetsMain deviceTwelve months
Accessories and batteriesRechargeable batteries (including built-in types)Six months

Two years

Memory cards, cables, headsets and other accessories and parts, which don’t requare to disassemble the mobile device in order to replace.

One month

Table 1

The manufacturer shall not bear warranty obligation regarding the device in the following cases:

  • Violations of rules and conditions of exploitation, adjustment, installation of device, described in the User’s Manual and other documentation, which is transported to the consumer in the complete set with the device;
  • If mechanical damages have occured after the transfer of the device to the consumer;
  • The ingression of inappropriate items, liquids, insects, etc. inside the device during usage;
  • Device’s operation in conditions of excessively high or low temperature, surrounded by high humidity, high dust content;
  • Making schematic-technical, design or software changes, not approved by the manufacturer;
  • Repair or modification of device, performed by unauthorized persons;
  • If the damage is caused by the use of non-standard and/or non-qualified expandable materials, charging devices, spare parts, batteries, electronic media, software products that were not supplied or recommended by the manufacturer;
  • If the damage (defects) is caused by the action of computer viruses or similar programs;
  • If the damage (defects) is caused by non-compliance with standards or technical regulations of the power, cable, telecommunication networks, radio signal power, including features of the relief and other similar external factors, usage of the device on the edge or outside of a network action zone, connection to inappropriate or defective external devices;
  • If the defect occurred due to natural wearing down during the exploitation of the device. In this case, natural wearing down is understood as the consequences of product’s operation, which caused the deterioration of technical status and appearance due to long-term using of this device;
  • If the damage of LCD pixels of screens does not exceed 0.0005 percent of the total quantity of pixels on the screen (according to the ISO 9241-303)
  • The occurrence of force majeure (natural phenomena, fire, lightning, etc.).


The manufacturer shall not carry warranty obligation:

Under no circumstances are the manufacturer or its authorized organizations for unusual, incidental, direct or indirect damage (or losses), including, but not limited to, lost profits, loss or inability to use information or data, expenses of recovering information or data, damages caused by interruptions in commercial, manufacturing or other activity, arising in connection with the usage or inability to use a device.

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