Model Number: H-289 Unlimited range two way radio Brand Name: TESUNHO Key Specifications/Special Features: Quick detailsPlace of origin: Fujian, China (Mainland)Brand name: TESUNHO modelNumber: TH-289Type: HandheldDimensions: 100*58*32mmFrequency range: HSDPA/WCDMA:2100/1900/850(900)MHZStorage channel: 56Talk range: Unlimited(Global)UMTS band: HSDPA/WCDMA:2100/1900/850(900)MHZSIM card: GSMAdvantages: 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 detail:Shipped in 3 days after payment

how it works
First, GSM 3G radio works with GSM850/1900/UTMS2100MHz or GSM900/1800/UTMS2100MHZ(depend on your country). You need to buy a SIM card to insert into the radio and it can talk, cover the whole world.
Second, GSM 3G walkie talkie cost data flow, normally it is 2.88M per hour for unstopping communication, It is 0.06M on the standby mode per day.
TH-289 can be made with GPS function.
Third, there will be a management website for you to assign users' account and set talking rights or function. It helps institution with many people to save time and cost on communication.

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