Versions to choose:

B and C Support 4G Network,4G Frequency band and Chip :
LTE FDD: B1/B3/B8 LTE TDD: B38/B39/B40/B41
WCDMA: B1/B8 TD-SCDMA:B34/B39
BC0 CDMA2000 1X/EVDO GSM: 900/1800
4G Network currently working countries are: Romania, Moldova, Japan, Vietnam, Russia, Singapore,Indonesia, United Kingdom, Ecuador, South Korea, Portugal, Brazil,Philippines, Togo, Qatar, Burkina Faso
Detailed Parameters:
A: Quad Core 1GB RAM 16GB ROM:
1.CPU: Intel ATOM 4 Quad Core
2.Main Frenqency: 1.3GHz*4
3.OS: Android 10.0 System
4.RAM: 1G DDR3 ROM: 16G
5.Support 2 USB input,Support 1080P hardware decoding and all format of audio play
6.Support USB interface camera,USB DVR,Support Mirror Link ( android and iPhone )
7.Built-in GPS navigation
8.BT built-in,support voice call and A2DP, can play stereo music through BT from your Phone
9.Built-in WIFI,support wireless internet and hot-spot sharing
10.Support AHD Rear View Camera,Support WIFI,USB plugins the huge mobile hard disk
11.Support capacitive screen multi-touch screen.More sensitive touch response
12.Radio FM / RDS receiver
13.Support BT phonebook search,A2DP , OBD2,mouse,handle , keyboard and external auxiliary equipment;Support Steering wheel control
14.Low radiation interference,enjoy the much better radio reception
B: Quad Core 1/2GB RAM 32GB ROM:
1.CPU: Intel ATOM 4 Quad Core
2.Main Frenqency: 1.5GHz*4
3.OS: Android 10.0 System
4.RAM: 1/2G DDR3 ROM: 32G
5.Amplifier IC/PA ST7850
6.Support 2 USB input,Support 1080P hardware decoding and all format of audio play
7.Support USB interface camera , USB DVR,Support Mirror Link ( android and iPhone )
8.Built-in GPS navigation
9.BT built-in,support voice call and A2DP, can play stereo music through BT from your Phone
10.Built-in WIFI,support wireless internet and hot-spot sharing
11.Support AHD Rear View Camera;
12.Support WIFI, USB plugins the huge mobile hard disk
13.Support capacitive screen multi-touch screen.More sensitive touch response
14.Radio NXP6856 FM/AM/RDS receiver
15.Support BT phonebook search,A2DP,OBD2,mouse,handle,keyboard and external auxiliary equipment;Support Steering wheel control
16.DSP: High-fidelity,low-noise DSP with 36-band EQ,surround sound,independent adjustment of front and rear sound)
17.Support Network 4G TD-LTE/FDD-LTE/TD-SCDMA/HSPA(+)/WCDMA/HSPA(+)/GSM/GPRS/EDGE
C: Octa Core 4GB RAM 64GB ROM
1.CPU: Intel ATOM Octa Core
2.Main Frenqency: 1.8GHz*8
3.OS: Android 10.0 System
4.RAM: 4G DDR3 ROM: 64G
5.Amplifier IC/PA ST7850
6.Support 2 USB input;Support 1080P hardware decoding and all format of audio play
7.Support USB interface camera , USB DVR
8.Support Mirror Link (android and iPhone )+ Build-in Carplay function
9.Built-in GPS/GLONASS/COMPASS navigation
10.BT built-in,support voice call and A2DP, can play stereo music through BT from your Phone;Built-in WIFI,support wireless internet and hot-spot sharing
11.Support AHD Rear View Camera + Build in 360 Panorama system (not include cameras )
12.Support WIFI, USB plugins the huge mobile hard disk
13.Support capacitive screen multi-touch screen.More sensitive touch response
14.Radio NXP6856 FM/AM/RDS receiver
15.Support BT phonebook search,A2DP , OBD2,mouse,handle , keyboard and external auxiliary equipment;Support Steering wheel control
16.DSP: Hi-Res: 192kHz/24Bit 36-band EQ,surround sound,independent adjustment of front and rear sound
17.Support Network 4G TD-LTE/FDD-LTE/TD-SCDMA/HSPA(+)/WCDMA/HSPA(+)/GSM/GPRS/EDGE