1. Introduction
The FeiyuTech VB4SE is a compact and lightweight 3-axis smartphone gimbal stabilizer designed to capture smooth, stable video footage and photos. This manual provides detailed instructions for setting up, operating, and maintaining your VB4SE gimbal, ensuring optimal performance and longevity.

Image 1.1: The FeiyuTech VB4SE 3-Axis Smartphone Gimbal Stabilizer in its operational state, holding a smartphone.
2. What's in the Box
Verify that all the following items are included in your package:
- Feiyu VB4SE Foldable Gimbal (Main Body)
- Mini Tripod
- USB A to USB C Charging Cable
- Drawstring Bag
- User Manual (this document)

Image 2.1: All standard accessories included with the FeiyuTech VB4SE gimbal: the gimbal itself, a mini tripod, a USB-C charging cable, and a drawstring bag.
Optional Accessories
The Feiyu VB4SE is compatible with optional accessories to enhance its functionality:
- AI Intelligent Tracking Module: Connects via the USB-C expansion port for AI face tracking and gesture control.
- Magnetic Fill Light: Provides additional illumination for various shooting conditions.
3. Product Overview
The FeiyuTech VB4SE gimbal features a foldable design for portability and an ergonomic grip for comfortable use. Key components include the smartphone clamp, 3-axis stabilization motors, control panel, and battery.
Compact and Portable Design
The gimbal weighs approximately 315g (11.1 oz) and folds to a length of 6.1 inches, making it easy to carry.

Image 3.1: The FeiyuTech VB4SE gimbal in its folded state, demonstrating its compact size for easy storage and transport in a bag.
Control Panel and Indicators
The control panel includes a joystick, a multi-function knob, and various indicator lights for status feedback.

Image 3.2: A detailed view of the gimbal's control panel, highlighting the status/battery indicator, Bluetooth indicator, follow status indicators, joystick, and multi-function knob.
Ergonomic Grip
The handle is designed for a comfortable and secure grip, reducing fatigue during extended use.

Image 3.3: A user holding the FeiyuTech VB4SE, illustrating the comfortable and ergonomic design of the gimbal's handle.
4. Setup
4.1 Charging the Gimbal
Before first use, fully charge the gimbal. Connect the provided USB-C cable to the gimbal's charging port and a USB power adapter (not included). The battery indicator lights will show the charging status. A full charge takes approximately 3.5 hours and provides up to 9 hours of runtime.
4.2 Mounting Your Smartphone
Ensure your smartphone is within the compatible dimensions:
- Maximum Weight: 260g (9.2 oz)
- Maximum Width: 88mm (3.5 inches)
- Maximum Thickness: 10mm
- Unfold the gimbal.
- Gently pull open the smartphone clamp.
- Insert your smartphone into the clamp, ensuring it is centered and secure. The phone's camera should ideally be on the left side when facing the gimbal's front.

Image 4.1: Diagram illustrating the maximum width and thickness of smartphones compatible with the FeiyuTech VB4SE gimbal clamp.
4.3 Balancing the Smartphone
Proper balancing is crucial for optimal performance and battery life. After mounting your phone, adjust its position in the clamp until it remains level when the gimbal is powered off. This reduces strain on the motors.
4.4 Powering On/Off
- Power On: Press and hold the power button until the indicator lights illuminate.
- Power Off: Press and hold the power button until the indicator lights turn off.
4.5 App Installation and Connection (Feiyu ON App)
For full functionality and advanced shooting modes, download the Feiyu ON app from the App Store (iOS) or Google Play Store (Android).
- Search for "Feiyu ON" in your device's app store and install it.
- Enable Bluetooth on your smartphone.
- Power on the VB4SE gimbal.
- Open the Feiyu ON app and follow the on-screen instructions to connect to your gimbal via Bluetooth.

Image 4.2: Screenshot of the Feiyu ON app interface, along with icons for downloading the app from the Apple App Store and Google Play Store.
5. Operating Instructions
5.1 Basic Controls
- Joystick: Controls the pan and tilt movement of the smartphone.
- Multi-function Knob:
- Long Press: Switches between controlling zoom/focus and controlling the three axes (roll/tilt/pan).
- Single Tap: Switches between controlling zoom/focus and controlling roll/tilt/pan.
- Rotate: Adjusts zoom, focus, or axis movement based on the selected mode. (Note: Zoom/focus control is only available within the Feiyu ON app.)
- Mode Button (M): Cycles through different shooting modes.

Image 5.1: Close-up of the multi-function knob on the FeiyuTech VB4SE, used for controlling various gimbal functions like zoom, focus, and axis movement.
5.2 Shooting Modes
The VB4SE offers several shooting modes, indicated by the follow status lights:
- Pan Follow (PF): The pan axis follows your movement, while the tilt and roll axes remain locked.
- Tilt Follow (TF): The tilt axis follows your movement, while the pan and roll axes remain locked.
- Lock Mode (HL): All three axes are locked, keeping the camera pointing in a fixed direction.
- FPV Mode: All three axes follow your movement, providing a first-person view effect.
- All Follow Mode (AF): All three axes follow your movement smoothly.

Image 5.2: The FeiyuTech VB4SE gimbal actively stabilizing a smartphone during a dynamic outdoor activity, demonstrating its 3-axis stabilization capabilities.
5.3 Advanced Shooting Features (via Feiyu ON App)
The Feiyu ON app unlocks additional creative shooting modes:
- Time-lapse: Capture sequences of images over time to create accelerated videos.
- Dolly Zoom: Create a dramatic visual effect where the background appears to change size while the subject remains constant.
- Light Trail: Capture artistic photos with light streaks.
- Double Exposure: Combine two exposures into a single image.
- Panorama: Stitch multiple photos together to create wide panoramic images.
5.4 Gesture Control
When connected to the Feiyu ON app, the gimbal supports gesture control for hands-free operation.

Image 5.3: Illustrations of various hand gestures recognized by the FeiyuTech VB4SE for functions such as taking photos, recording videos, starting/stopping tracking, and switching between vertical/horizontal modes.
5.5 AI Tracking (with Optional Module)
If you have the optional AI Intelligent Tracking Module, you can enable AI face tracking and gesture control for automatic subject following.

Image 5.4: The FeiyuTech VB4SE gimbal utilizing AI tracking to automatically follow a subject, indicated by a green box around the person in the smartphone display.
6. Maintenance
6.1 Cleaning
Wipe the gimbal with a soft, dry cloth. Do not use liquid cleaners or solvents. Keep the charging port free of dust and debris.
6.2 Storage
Store the gimbal in its folded state in the provided drawstring bag or a protective case. Avoid exposing it to extreme temperatures, humidity, or direct sunlight. For long-term storage, ensure the battery is charged to approximately 50-60%.
6.3 Battery Care
To prolong battery life, avoid fully discharging the battery frequently. Recharge the gimbal regularly, even if not in use, to prevent deep discharge.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Gimbal does not power on. | Low battery. | Charge the gimbal fully. |
| Gimbal vibrates or motors are weak. | Smartphone not balanced correctly; phone too heavy. | Re-balance the smartphone. Ensure phone weight is within specifications. |
| Cannot connect to Feiyu ON app via Bluetooth. | Bluetooth is off; app not open; gimbal not in pairing mode. | Ensure Bluetooth is enabled on your phone. Restart the app and gimbal. Follow app instructions for pairing. |
| Gimbal stops charging. | Faulty cable or power adapter; internal issue. | Try a different USB-C cable and power adapter. If the issue persists, contact customer support. |
8. Specifications
- Model: VB4SE
- Dimensions (Unfolded): 2.4"D x 4.92"W x 10.83"H (61mm x 125mm x 275mm)
- Dimensions (Folded): 3.88" x 6.06" x 2.11" (98.5mm x 154mm x 53.5mm)
- Item Weight: 315g (11.1 ounces)
- Payload Capacity: Up to 260g (9.2 oz)
- Compatible Smartphone Width: Up to 88mm (3.5 inches)
- Compatible Smartphone Thickness: Up to 10mm
- Battery Capacity: 1300mAh
- Runtime: Up to 9 hours
- Charging Time: Approximately 3.5 hours (via USB-C)
- Connectivity: Bluetooth 5.0
- Manufacturer: FeiyuTech
9. Warranty and Support
FeiyuTech products are covered by a limited warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official FeiyuTech website. For technical support, troubleshooting assistance, or service inquiries, please contact FeiyuTech customer support through their official channels.
Online Resources:
- Official FeiyuTech Website: www.feiyu-tech.com
- Feiyu ON App Support: Refer to the app's help section.





