Product Overview
The Satisfyer Heat Flex 4 is a versatile rabbit vibrator engineered for enhanced pleasure. It integrates three independently controllable functions: deep vibration, stimulating rotation, and a comforting heat function. Constructed from skin-friendly silicone, this device is also fully waterproof, allowing for diverse usage environments.

Image: The Satisfyer Heat Flex 4 device in light blue, displayed alongside its product packaging, illustrating its key features.
Important Safety Guidelines
- This device is intended for external and internal use only.
- Do not use the device if it appears damaged or faulty.
- Consult a healthcare professional if you experience any discomfort, irritation, or adverse reactions.
- Keep the device out of reach of children.
- Clean the device thoroughly before and after each use.
- Use only water-based lubricants with this product to prevent material degradation.
The Satisfyer Heat Flex 4 is crafted from skin-friendly silicone and Thermoplastic Elastomer (TPE). It is waterproof (IPX7), ensuring safe use in wet environments such as the shower or bath.
Package Contents
- Satisfyer Heat Flex 4 device
- Magnetic USB charging cable
- Instruction Manual
- Water-based lubricant samples (contents may vary)

Image: The Satisfyer Heat Flex 4 device shown with its magnetic USB charging cable, ready for charging.
Setup: First Use and Charging
- Before initial use, ensure the device is fully charged.
- Connect the magnetic USB charging cable to the two small charging points located on the base of the device.
- Plug the USB end of the cable into a compatible USB power source (e.g., computer, USB wall adapter).
- The charging indicator light on the device will illuminate during charging. It will typically turn off or change color once fully charged.

Image: A detailed view of the device's base, highlighting the magnetic charging contacts.
Operating Instructions
The Satisfyer Heat Flex 4 offers distinct vibration, rotation, and heat functions, which can be activated and controlled independently for a customized experience.
Power On/Off
- To turn the device ON, press and hold the power button (①) for approximately 2 seconds.
- To turn the device OFF, press and hold the power button (①) again for approximately 2 seconds.
Vibration Function
- Once the device is powered on, press the vibration button (②) to activate the vibration function.
- Continue pressing the vibration button (②) to cycle through 12 different vibration programs, varying in pattern and intensity.
Rotation Function
- Press and hold the rotation button (③) for approximately 2 seconds to activate the rotation feature.
- Press the rotation button (③) to cycle through 6 distinct rotation programs.
- To deactivate the rotation function, press and hold the rotation button (③) again for approximately 2 seconds.
Heat Function
- Press and hold the heat button (④) for approximately 2 seconds to turn on the heat function. The device will gradually warm up to 39 °C (102 °F).
- To turn off the heat function, press and hold the heat button (④) again for approximately 2 seconds.

Image: Close-up of the control buttons on the Satisfyer Heat Flex 4, indicating power, vibration, rotation, and heat functions.

Image: Visual representation of the device's three core functions: vibration, rotation, and heat, with icons for each.
Experiment with different combinations of vibration patterns, rotation speeds, and the heat function to discover your most satisfying settings.
Maintenance: Care and Cleaning
- Always clean your Satisfyer Heat Flex 4 thoroughly before and after each use to maintain hygiene.
- Wash the device with warm water and a mild, toy-friendly soap or a specialized toy cleaner.
- Rinse the device thoroughly with clean water, ensuring no soap residue remains.
- Gently pat the device dry with a lint-free cloth.
- Do not use cleaners containing alcohol, petroleum, or acetone, as these chemicals can damage the silicone material.
Storage
Store the device in a clean, dry place, away from direct sunlight and extreme temperatures. To prevent potential damage or discoloration, keep it separate from other toys made of different materials.
Troubleshooting: Common Issues
- Device not turning on: Ensure the device is fully charged. Press and hold the power button for 2 seconds.
- Weak vibrations or rotation: The battery may be low. Recharge the device using the provided magnetic USB cable.
- Charging issues: Verify that the magnetic charging cable is properly aligned with the charging points on the device and that the USB power source is functional.
If you encounter persistent issues that cannot be resolved using these steps, please refer to the warranty information or contact Satisfyer customer support for further assistance.
Product Specifications
| Feature | Detail |
|---|---|
| Brand | Satisfyer |
| Model | Heat Flex 4 (3769) |
| Material | Skin-friendly Silicone, Thermoplastic Elastomer (TPE) |
| Color | Light Blue |
| Functions | Vibration, Rotation, Heat (up to 39 °C / 102 °F) |
| Vibration Programs | 12 |
| Rotation Programs | 6 |
| Water Resistance | Waterproof (IPX7) |
| Power Source | Rechargeable Lithium Ion Battery (included) |
| Charging | Magnetic USB charging cable |
| Package Dimensions | 11.54 x 6.5 x 3.9 inches |
| Manufacturer | Satisfyer |

Image: The Satisfyer Heat Flex 4 device with its approximate dimensions indicated.
Warranty and Support
Warranty Information
Satisfyer products are manufactured to high-quality standards and typically come with a 15-year guarantee. For complete details regarding the warranty terms, conditions, and registration process, please refer to the official Satisfyer website or the documentation included with your product.
Customer Support
For any questions, technical assistance, or warranty claims, please visit the official Satisfyer website or contact their dedicated customer service department. Contact information can usually be found on the product packaging or the official website.
Helpful Product Videos
The following video provides additional information and demonstrations for Satisfyer products. Please note that this video may feature a related model but illustrates general features and usage principles applicable to the Satisfyer Heat Flex 4.
Satisfyer Heat Wave (Related Model)
Video: An overview of the Satisfyer Heat Wave, demonstrating features such as app connectivity, dual motors for G-spot and clitoral stimulation, heat and vibration functions, body-friendly silicone, and magnetic USB charging. While featuring a different model, many principles apply to the Heat Flex 4.





