TH-388gsm walkie-talkie phone, two-way radio for security guard

Model Number: TH-388 gsm two way radio Brand Name: TESUNHO Key Specifications/Special Features: Quick detailsPlace of origin: Fujian, China (Mainland)Brand name: TESUNHOModel number: TH-388Type: HandheldDimensions: 120*60*40mmFrequency range: HSDPA/WCDMA: 2100/1900/850(900)MHZStorage channel: GroupTalk range: Unlimited(Global)UMTS band: HSDPA/WCDMA: 2100/1900/850(900)MHZSIM card: GSMAdvantages: GPS satellite Plsi, Flashlight, 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 2 days after payment
Features:
1.44 TFT display with 128*128 pixels and 65K colors
9 keys on front, 3 keys on side, easy operation
Keys can be programmed with different functions
Instant private calling can be set
Dispatching console information display
Friendly interface displays the calling information
Update software off-line
LED flashlight
Optional: power on display can be customized(any information like company name, phone)
GPS function (optional)
How it works
First, GSM 2G 3G WCDMA radio works with GSM850/1900/UTMS2100MHz or GSM900/1800/UTMS2100MHZ(depends 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-388 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.