Omis 42B is a 2G and 4G cellular audio surveillance and tracking system. 
 
This extremely simple to operate technical surveillance device is supplied in board only form, for professional users. 
 
 
 
Main specification:
 
Function - Realtime GPS/AGPS/Wifi/4G Cat 1/ LBS Positioning, SOS, Voice, Call Family Numbers, Geo Fence Alarm Reminder, historical track, Alarm Clock, Class Mode, Power Save
 
CPU - ZX Chip
PCB Size    35*20*3.8mm (thickness include PCBA and GPS antenna)
Working Temperature    -20℃ - +70℃
Network    4G: LTE-FDD:B1/B3/B5/B7/B8/B20 , LTE-TDD:B34/B38/B39/B40/B41 2G: GSM B3/B5/B8, Wifi    WiFi 802.11b/g/n
GPS    Support external active GPS antenna, support GPS+AGPS
SIM slot    Support NANO sim card
GPS Positioning Accuracy    Within 10 meter outdoor
GPS Motion Accuracy    0.1 meter/second
GPS Positioning Time    Cold Boot-38s(Open field), Warm Boot-2s(Open field),The specific time is affected by the environment
WIFI Positioning Accuracy    Within 50 meters
GSM/4G Positioning Accuracy    50-200 meters(Depending on the network)
Battery    Support rechargeable 3.7V Li-polymer battery(optional different capacity batteries upon different struction design)
Charging port    Android Micro-USB port
Charging Current:     DC 5V/0.5A-1A(depend on your battery capacity)
MIC    external High-Definition Silicon microphone
Sensor    Build-in 3D G-sensor