what is gsm sim

... Card punching machine Automatic Card Puncher YLFP--2 1. Introduction of Speed 4000~6000 CPH Full Size Card punching machine ...

... will be in the best condition. 2. The battery will discharge automatically, please charge it in time if it is not used for a long time. 3. Do not ...

Card Wireless Phone SMS Message Hand Free Product Description card wireless phone LS932 is new wireless telephone, Wireless Phone can ...

...-in induction 3-5h talking time How does it work? The new developed BOX has a built-in dual band module that works in both of Four Band mob...

Card Personal Mini Wireless Kids GPS Tracker 800mAH Battery Long Standby Specification Name Parameters Size 52*32*19mm Communication network G...

... a new card, place it in this device. Once you call this number, the device will auto answer. It works like a phone with auto answer without sp...

... Fence Voice monitoring Up to 50 hours Powerful tracking platform All commands can be set by APP Specification Item No. RF-V16 network (Quad ba...

...,tablets and PCs (support Android 2.3 or above),such as iPhone 4, 4S, 5, 5S,Sumsung S3, S4, Note 2, Note 3, Note 4 etc. Features: Supports call...

colorful Smart watch with touch screen digital watch for phones Product details: 1. CPU: MTK2502D 2. 1.54 inches FQVGA 240*240 pixel 3. Li-Bat...

SHUWEI Voice LCD WiFi Home Security Full touch screen fingerprint unlocking alarm system The hub cellular+Wi-Fi model is a dual network system...

Elderly Alarm GPS Tracking Locator Card Personal Mini Kids GPS Tracker MT35 is a wireless 2G Asset GPS Tracker or personal tracker with 2900mA...

camera rfid magnetic id card reader central locking fleet 4g card gps tracker for fuel sensor Why Choose iStartek? Product Advantages 4G & 2G ...

#detail_decorate_root .magic-0{border-bottom-style:solid;border-bottom-color:#53647a;font-family:Roboto;font-size:24px;color:#53647a;font-style:normal...

Working Based on existing GSM/GPRS network and GPS satellites, this product can locate and monitor any remote targets by SMS or GPRS.It is the most te...

Fantastic Amazing Bluetooth Activity Tracker Wireless Multifunctional Pedometer Watch Key Components: - OLED display, 3D Bosch sensor, Rechargeable Li...