Product Description 
3.1 Product Description
The device includes two parts: handled terminal and auto terminal.
3.1-1 handled terminal
 1) LCD Display , 128*64 pixel display with contrast adjustment, Backlit
2) Enter key   selects displayed
3) EXIT key  go back to the previous screens
4) Up/down??? arrows-moves the selection pointer and scrolls up or down.
5) LEFT/RIGHT    arrows-Select responses and moves cursor.
6) Power button
7) OBDII connector cable, connect car and the scan tool
8) USB port for update soft
9) Exterior power and electrification supply port/Charge
 
3.1-2 Car terminal
 3.2 Product Specifications
     Transmission range: 30m (no barrier)
    Battery: 280mAH 3.7V Lithium battery
    Standby time: 4 Hours
    Display - Backlit LCD,128*64 pixel display.
    Operating Temperature - 0 to 50? (??32 to 122?)
    Internal Power - Lithium battery
    You can use auto onboard power charger to charge the device while charging the lithium battery of the device.
    New function software can be upgraded by running after connecting the device to the computer.
    External Power: 5.0 vols provided via vehicle battery.
    Dimensions: host-108mm*84mm*21mm
OBDII-50mm*47mm*28mm

3.3 Product Features
Works on all 1996 and newer cars & light trucks that are OBD II compliant (including the VPW, PWM, ISO, KWP 2000 and CAN protocols)
Reads and clears generic and manufacturer specific Diagnostic Trouble Codes (DTCs)
Reading Freeze Frame Data
Testing I/M Reading Status
Reading vehicle info
Rescanning Data

4. Operating Instructions
1. Car terminal Operating Instructions
1) Turn the ignition off
2) Locate the 16-pin Data Link Connector (DTC), and plug into the Car terminal to the DLC.
3) It enters the ECU system successfully when you see the red led flicker.
About more details, please download the pdf file.