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Quick Details

  • Place of Origin: Fujian, China (Mainland)
  • Brand Name: TESUNHO
  • Model Number: TH-388
  • Type: Handheld
  • Dimensions: 120*60*40mm
  • Frequency Range: HSDPA/WCDMA:2100/1900/850(900)MHZ
  • Storage Channel: 200
  • Talk Range: Unlimited(Global)
  • UMTS Band: HSDPA/WCDMA:2100/1900/850(900)MHZ
  • SIM card: GSM
  • Advantages: GPS Satellite Plsi,Flashight,TOT
  • Feature: Selective Calls,Group Calls and All Calls
  • (U)SIM/SIMU: Standard SIM card,interface 3V SIM card,and 1.8V SIM card
  • Max power consumption: About 2.2W
  • Input intelligent charger: 12V/24V
  • Operating Voltage: DC3.3V-4.2V(3.8V is recommended)
  • Operating Temperature: -30*C to +75*C
  • Weight: About 194g

Packaging & Delivery

Packaging Details Standard Package
Delivery Time Shipped in 2 days after payment



Tesunho TH-388 Great design SOS two way radio unlimited distance woki toki walkie talkie with wholesale service


1. Product Description





 1. 12V/24V Input Intelligent Charger
  2. Ultra High Capacity Li-ion Battery
  3. USB Charging Interface
  4. Bright Flashlight Illumination

  5. Battery capacity: 4000 mAh, 6000 mAh ( optional ); support direct charge.

  6. Selective Calls, Group Calls and All Calls
  7. Transmittig Ending Prompt
  8. Battery Capacity Indicator
  9. Network Sigal Strength Prompt
10. Voice Prompt •TOT Function
11. User Authority Setting
12. Programmable Function Key






 Dimensions  (Without Antenna)

 100mm x 58mm x 32mm

 Weight  (With Battery)

 About 194g
 Operating Temperature -30*0 to +75*C
 Operating Voltage DC 3.3V-4.2V (3.8V is recommended)
 Operating Current
 Peak Current:  About 0.6A

 Average Current:   

 About 540mA@UMTS 2100 About

 239mA@GSM 900

 Standby Current: 

 About 5mA@UMTS About 5mA@GSM




 Standard SIM card interface 3V SIM card and 

1.8V SIMcard

 USB Interface USB 2.0 HIGH SPEED
 UART Interface 8-wires UART
 MAX. Power Consumption About 2.2W



 UMTS Band HSDPA/WCDMA: 2100/1900/850(900)MHz
 Transmit Power

 UMTS2100/1900/900/850: Power Class 3

 (+24dBm +2.5/-1.5dBm)

 EDGE 850MHz/900MHz: Power Class E2 

(+27dBm +4.5/-1.5dBm)

 EDGE 1800MHZ/1900MHz: Power Class E2

 (+26dBm +4.5/-2.5dBm)

 Receiving Sensitivity

 WCDMA2100: ^-108dBm

 WCDMA1900: <-109dBm

 WCDMA900 : ^-109dBm

 WCDMA850:^ -109 dBm

 GSM850/900/1800/1900: «-107dBm




4.Packing and Shipping


Packing List 

1 pc two way radio (100% brand new)

1 pc li-ion battery

1 pc antenna

1 pc adapter

1 pc intelligent charger

1 pc clip + 1 pc strap 

1 user manual









Main Unit

2 Year

Finish maintainance within 1-15days after receiving the returned units



6 Month

Within Half Year:send you brand new noe if is is not manually damaged.



6. Certifition


7. Our Company


 8. FAQ

1.How can you change the APN and account settings on the 388 equipment?

We have PC software, it can set the APN ,URL,Account etc. Follow the step to enter the programming status

1. Press PTT ,on the same time turn on the radio, the red blue light flash togeth,it means enter the programming status.

2. Install the programming software on the PC , install USB driver.

3. Input the right parameter on the programming status, clickwrite, When indicate OK, means programming success.

4.Pull out cable, the radio automatic reset, then the radio auto initialization parameters, be patient to wait.

2.GPS  Where can we see the equipments GPS position?

 You can kow from the dispatch.

 It supports both WCDMA and CDMA?  

Band1 UMTS900/2100  OR GSM900/1800   band2 GSM850/1800   UMTS850/1900

4. What is the OS for the product? Android?


5.do u ever plan to include a uhf radio into the radio so if no gsm network then normal vhf/ uhf funtion available?

Yes, it is on our schedule already, maybe this kind of gsm and vhf uhf combined radio will start from the mobile unit..The mainboard is under design now

6.I would like to know if the PTT can work with edge data  or only need 3g ??

Our walkie talkie can word with UTMS 900/2100M   GSM:900/1800M  (GPRS / EDGE)

 7.Can it be integrated with 3rd party software? What are they?  

 No, the other product will ok , developing.

8.Do you have CE certificate for this product?

TH-388 has CE, TH-288 289 will be applied later.

9.How does your phone walkie talkie work ?

Insert the Sim Card, then it works.

   hotel security bycicle walkie talkie 50 km

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