Introduction
This manual provides detailed instructions for the safe and effective use of your Leten 708 Future Pro Gen 3 Male Masturbator. This device features an internal heating system, dual interchangeable silicone sleeves, a voice function, and 10 distinct thrusting modes, all within a durable ABS exterior and soft silicone interior. Please read this manual thoroughly before first use and retain it for future reference.
Safety Information
Warning: This product is intended for adult use only (18+). Keep out of reach of minors.
- Do not use if you have any skin irritations, open wounds, or medical conditions that may be exacerbated by the use of this product. Consult a healthcare professional if you have concerns.
- Discontinue use immediately if you experience any discomfort, pain, or unusual reactions.
- Avoid submerging the main unit in water. The silicone sleeves are washable, but the electronic components are not waterproof.
- Use only water-based lubricants with the silicone sleeves. Oil-based lubricants can damage silicone materials.
- Do not attempt to disassemble or modify the device, as this may void the warranty and pose safety risks.
Product Overview
The Leten 708 Future Pro Gen 3 is designed for a comprehensive experience, combining multiple features in one compact device.

Image: The main unit of the Leten 708 Future Pro Gen 3, showcasing its design and the two included interchangeable silicone sleeves (one red, one blue).
Key Features:
- Advanced Heating Function: An internal heating system provides consistent warmth during use.
- Dual Sleeve Design: Includes two removable silicone sleeves for varied sensations and easy maintenance.
- Voice Function: Integrated sound options to enhance the experience.
- 10 Thrusting Modes: Multiple adjustable thrusting patterns for diverse stimulation.
- USB Rechargeable: Convenient charging for repeated use.
- Durable Construction: Made with an ABS exterior and a soft, body-safe silicone interior.

Image: Diagram illustrating the dimensions of the Leten 708 Future Pro Gen 3 main unit (11.4 inches / 29 cm long, 5.04 inches / 12.8 cm wide) and its silicone sleeves (5.1 inches / 13 cm long, 1.6 inches / 4 cm wide).
Setup
1. Charging the Device

Image: Close-up of the USB charging port on the device, indicating its compatibility with power banks, notebooks, and standard USB chargers.
- Locate the USB charging port on the device.
- Connect the provided USB charging cable to the device and a compatible USB power source (e.g., power bank, computer USB port, or wall adapter).
- The charging indicator light will illuminate. Allow the device to charge fully before first use.
2. Inserting the Silicone Sleeve
- Select one of the two interchangeable silicone sleeves.
- Carefully insert the chosen sleeve into the main ABS housing, ensuring it is securely seated and aligned.
Operating Instructions
1. Power On/Off
- Press and hold the power button (usually marked with a power symbol) for a few seconds to turn the device on or off.
2. Thrusting Modes

Image: The device illustrating its internal mechanism for 10 super stroking modes, with arrows indicating the thrusting motion.

Image: A view into the device's opening, highlighting the built-in 4-airbag squeezer for 10 modes of airbag massage.
- Once powered on, use the designated mode selection buttons (refer to the device's control panel) to cycle through the 10 available thrusting patterns.
- Use the '+' and '-' buttons to adjust the intensity or speed of the thrusting action.
3. Heating Function

Image: The device's opening with a visual representation of the hot air heating system, showing warmth being generated to pre-warm the sleeve to 40°C.
- Press the heating button (if available) to activate the internal heating system.
- Allow a few minutes for the sleeve to warm up to the optimal temperature (approximately 40°C).
4. Voice Function

Image: A close-up of the device's control panel, highlighting an 'adjustable aroma' feature, suggesting an immersive experience.
- Press the voice button (if available) to activate or deactivate the integrated sound features.
- Some models may allow for volume adjustment using the '+' and '-' buttons.
Maintenance
1. Cleaning
- After each use, turn off the device and carefully remove the silicone sleeve from the main unit.
- Wash the silicone sleeve thoroughly with mild soap and warm water. Rinse completely to remove all soap residue.
- Wipe the exterior of the main unit with a damp cloth. Do not submerge the main unit in water.
2. Drying
- Allow the silicone sleeve to air dry completely before reinserting it into the main unit or storing it. Ensure no moisture remains to prevent bacterial growth.
- Ensure the main unit is also dry before storage.
3. Storage
- Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Keep the device and its components in a clean, dust-free environment.
Troubleshooting
- Device not turning on: Ensure the device is fully charged. If the issue persists, try charging with a different USB cable or power source.
- Thrusting modes not working: Check if the device is powered on and fully charged. Ensure the sleeve is correctly inserted.
- Heating function not working: Verify the heating function is activated. Allow sufficient time for the element to warm up.
- Unusual noises or smells: Discontinue use immediately and contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Model Name | 708 Future Pro Gen 3 |
| Brand | Leten |
| Material | Acrylonitrile Butadiene Styrene (ABS), Thermoplastic Elastomer (TPE) |
| Power Source | Rechargeable Electric (USB) |
| Functions | Heating, 10 Thrusting Modes, Voice Function, Dual Sleeves |
| Manufacturer | Lover Toys Shop |
Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact the seller/manufacturer directly. Keep your proof of purchase for any warranty claims.