User's Manual

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 Electrical stimulation output prompt: When the unit is in the state of electrical stimulation, the display will show
the lightning symbol, and the electrical stimulation will stop showing the electrical stimulation intensity. When the
gait mode is activated, there will be a “bee” sound prompt for each output of the electrical stimulation (the sound
can be muted by the APP software setting).
Lightning Symbol Electrical Stimulation Intensity
 Load detection: When the electrode of the unit is in poor contact with the skin, the display screen will have an
exclamation point icon and an electrode loose icon alternately displayed. The unit automatically stops the electrical
stimulation output and has 3 “bee” prompts. After the electrode of the unit is in full contact with the skin of the leg,
press the electrical stimulation intensity adjustment button to continue the current mode.
 Low voltage / charging prompt: When the unit is low, there will be a battery icon display (battery display zero
capacity) at low voltage and flash at 1 second interval. When the battery voltage is as low as the shutdown voltage,
the unit automatically shuts down. The dynamic charging icon is displayed while charging, and the full battery
icon is displayed when charging is completed.
Low battery, flash every 1 second Start charging Charging... Charging... Full Charge
 Automatic screen saver/shutdown: When there is no change in the content of the display, the brightness of the
display will automatically reduce after 30 seconds, and enter the screen saver animation after 60 seconds; the
screen saver "XFT" LOGO in animation form will move to the right; when the unit is low voltage to the shutdown
voltage, automatic shutdown; the unit will automatically shut down in the standby (no electrical stimulation output)
for 2 hours.
Screen Saver Icon
3.3 APP Software Description (optional)
 Hardware requirements:
iPhone 5s and subsequent release models of the iPhone.
 Software Environment:
System environment: IOS 8.x/9.x/10.x/11.x;
Development environment: Xcode 8.0 and above;
Security software: none;
Network requirements: none.
4. Operation Instruction
4.1 How to wear G4?
This product can be used separately or with APP software.