Estalky F25-A new POC PTT 4G LTE Radio Phone, with GPS tracking, bluetooth, WIFI based on Android 7.0 OS system, add into NFC Module to enrich its performance, works well on Tassta, Zello, Walkie Fleet and Azetti many platform.

Small and light enough to be held on, Estalky F25 is a next generation of 4G Smart LTE POC hand-held radio, with a wide range of functionality inherited from the entry level 3G POC Radio F22+, which offers all the benefits of a compact hand -held device, without compromise on the performance.

A powerful MTK6739 chipset, coupled with exceptional receive sensitivity, offers the F25 extended operational range, allowing the users to keep talking where other small device fails.


F25 with a powerful MTK6739 chipset, as well as its exceptional receive sensitivity, ensuring unrivalled coverage in any like-for-like comparison and typically giving up to one extra wall of signal penetration within buildings.

The new evolution for Estalky Pus to Talk Radio with 2.4 inch G+G Touch Screen, Support NFC, Delicted PTT Button and SOS Button, make your working and communication easy and flexible.


M6 Connector is on all professional two way radios and POC Hand-held radio.

The M6 Connector is used to connect with different accessories like Wired headset, RSM Speaker, D-shape headset etc., widely deployed on different communication fields like safety, public security, oil and gas etc.,


Emergency button(SOS Button) send out a distress call to the Dispatch console, allows authorised user to interrupt conversations during an emergency or to delivery critical communication.

Coupled with the PTT Hand-held device enables you to escalate matters of safety and releated concerns to our safety reponse team in real time


It embodied on a powerful and removable 3600mAh long-life battery, to enable the user communicate with each other continuously, also attached the NFC module to enrich its performance
Feature Technical Description
1.1 Main CPU & SW
Android Android 7.0 OS
Language Multi-language
1.2 Memory
RAM+ROM 1GB +8GB (Up to 32GB)
SD Card 32GB
1.3 LCD
LCD 2.4 inch G+G Screen
LCD resolution                                                         QVGA 
LCD Colors 2.4 QVGA 240*320mm
1.4 Touch
Touch type & size 2.4" G+G Touch Screen
Glass Coning generation 3
Multi-touch 5 point touch screen 
1.5 Sensor
SersorS Yes
1.6  Frequency/Bands
Network (GSM.WCDMA,FDD,TDD) GSM:850/900/1800/1900 
FDD-LTE:B2/B4/B5/B7/B17(US band)
FDD-LTE:B1/B3/B7/B8/B20 (EU band)
1.7 Camera
Front& Rear Camera Back:5M with focus
Flash Light:real light 
1.8 Wi-Fi
IEEE802.11a Yes (5G)
IEEE802.11b Yes(2.4G)
IEEE802.11g Yes(2.4G)
IEEE802.11n  Yes(2.4G&5G)
WIFI anternna Type Wi-Fi & BT Coexistence 
Internal  FPC antenna
1.9  Bluetooth
Version BT v4.0 with BLE
BT2.1+EDR (Enhanced Data Rate)
Power Level (Max) Class 2
Operation distance (Max) 10 meter
2.0 GPS & A-GPS
GLONASS Support Yes
GPS Support Yes
AGPS Support Yes
GOS antenna Type Internal FPC antenna
2.1 Speaker & MIC
Output Φ36mm,2.0W
SPL 90dB
Receiver 1506
MIC Type single pole mic
MIC Sensitivity -42dB±3
SIM card one Micro-SIM card
Vibrator Yes
2.2 USB
USB type : Micro USB Yes
USB : More than v2.0 2.0
Cable length 1.0m
2.3 Earjack Interface Type M6 Connector
2.4 Indicator LED 3-colors(Red、 Green、 Blue)
3.1 Size
Height ( H * W * D ) 119.5*61.5*23.5
Weight  210g
IP code IP54
Drop Test  1.5m
3.2 Key buttons
keys button Yes
4、 Battery
Battery type Li-Po
Battery capacity 3500 mAh
Removable battery Yes
5、 Charge, Data Interfaces
5.1 Charging
Micro USB (For Handset) Yes
Battery charging terminal (For Cradle) Cradle charging
5.3 Cradle Spec
Input voltage  DC 5V / 1.0A
Output voltage DC 5V /  1.3A
DC 4.35V /  0.7A
Interface Type Micro USB
5.4 Phone Adaptor Spec
Input voltage AC 100 ~ 240V
Output voltage DC 5V / 1.0A
Interface Type Standard USB
6、 Environmental Conditions
Operating Temperature ( -20℃ ~ 60℃) -20℃ ~ 60℃
Storage Temperature ( -30℃ ~ 70℃)  -30℃ ~ 70℃
Humidity (20 ~ 90%) 20 ~ 90%
ESD (Contact: ±8KV / Air:  ±12KV)  Contact:  ±8KV 
Air:  ±12KV
RoHS 6 Complian Yes
7、 Certification and safety spec
Europe CE
American FCC