2G GPS Watch Tracker with SOS Call Button and Alarm Function, Supports AGPS

Model Number: ES501-151221 Brand Name: eSky Key Specifications/Special Features: 1.General descriptionES501 is a GPS watch tracker with an internal battery (480mAHr). It has a long standby time and the appearance is similar to an ordinary watch. It has internal GPS and GSM/GPRS antennas. It supports A-GPS. In normal power-saving mode (GSM/GPRS on), standby time is 30 hours with a 2 minute GPS location reporting interval. In deep sleep mode (GSM/GPRS off), the standby time can be extended to 180 days with a 1 day reporting interval. ES501 reports location information via TCP, UDP or SMS with configurable intervals. It has voice communication capability. It can connect to a pre-configured phone number. ES501 will automatically switch to cell-ID based location reporting wherever GPS is not available2.Main functionsTime display: GPS precise timing, there is need to manually adjust the timeTracking: periodically sends GPS information (Location, speed) to a server. Reporting interval and server information can be set by SMS or TCP/UDP commands
Geofence: device sends an alarm message to the server when entering or exiting a predefined area
SOS button: makes an SOS call or SMS message to a pre-configured phone
Over speed limit: reports over-speed limit if watch’s speed is over the limit
Mileage: reports mileage of the device
3-Axis accelerometer: withbuilt-in3-axis accelerometer,
detectsiftheuserfallsdown
Storing message: the device stores up to 1000 messages if out of coverage and sends the stored message once the device regains coverage
Battery low warning: when battery level is low, it sends a message to a pre-configured phone to remind you to charge the device
A-GPS: assisted GPS saves power consumption and makes GPS acquisition quicker
Cell-ID based location: device reports cell-ID based location information where GPS signal is not available
OTA (Over the air): the device’s firmware can be upgraded via TCP
3. Specification
Physical and electrical
Dimensions: 39.8mm*36.8mm*16.8mm Weight: 48g
Power Consumption:
- Active mode: <70mA @3.8VDC
- Sleep mode: < 3mA @3.8VDC
Operation temperature: -20°C to 60°C
Storage temperature: -40°C to 60°C
Built-in cellular and GPS antenna
USB Interface: used for charging
GPS specification
-158 dBm tracking sensitivity
Accuracy (Open Sky): <2m (CEP50)
Cellular communication
Quad band:GPS/GPRS 850/900/1800/1900 MHZ
GPRS multi-slot class 12
GPRS mobile station class B
Compliant to GPS/GPRS phase 2/2+
Output Power:
- Class 4 (2W @850/900MHZ)
- Class 1 (1W @1800/1900MHZ)
Protocol: TCP/UD