1. Introduction
The TUINYO S12 True Wireless Ear Hooks are designed for comfortable audio listening with an open-ear design, ensuring situational awareness. They feature IPX5 waterproofing and a stable Bluetooth connection, suitable for various activities.

Image 1.1: Open-ear design for all-day comfort, allowing awareness of surroundings.
2. What's in the Box
Verify that all items are present in the package:
- Open Earbuds (Left and Right)
- Charging Case
- User Manual
- Type-C Charging Cable

Image 2.1: Package contents of the TUINYO S12 True Wireless Ear Hooks.
3. Setup - Pairing Your Ear Hooks
The TUINYO S12 ear hooks utilize Bluetooth V5.4 for a fast and stable connection. Follow these steps to pair your device:
- Ensure the ear hooks are charged.
- Open the charging case. The ear hooks will automatically enter pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth.
- Search for available Bluetooth devices and select "TUINYO S12" to connect.
- Once connected, the ear hooks will automatically reconnect to your device when taken out of the case, if Bluetooth is enabled on your device.

Image 3.1: One-step pairing and auto-reconnection process.
4. Operating - Touch Controls
The ear hooks feature smart touch controls for easy management of audio and calls:
- Pause/Playback: Touch MFB (Multi-Function Button) 2 times.
- Next Track: Touch MFB 3 times on the right ear hook.
- Previous Track: Touch MFB 3 times on the left ear hook.
- Volume Up: Long touch on the right ear hook.
- Volume Down: Long touch on the left ear hook.
- Answer/End Call: Touch MFB 2 times.
- Activate Voice Assistant: Touch MFB 3 times.
- Power On: Touch MFB for 2 seconds.
- Power Off: Touch MFB for 5 seconds.

Image 4.1: Smart touch control functions for the ear hooks.
5. Wearing Your Ear Hooks
For optimal comfort and sound, ensure the ear hooks are worn correctly:
- Take the earphones out of the charging case.
- Hang the end of the earphones over your ear bone.
- Turn the earphones and slide them behind your ear.
- Adjust the earphones for a secure and comfortable fit.

Image 5.1: Step-by-step guide for wearing the ear hooks.
6. Maintenance
6.1. Charging
The ear hooks provide up to 10 hours of playtime on a single charge. The charging case extends the total standby time to 40 hours. Use the provided Type-C cable to charge the case.

Image 6.1: Battery life and charging information.
6.2. Waterproofing
The ear hooks are IPX5 certified waterproof, making them resistant to sweat and light rain. This protection is suitable for workouts and outdoor activities. Avoid submerging the ear hooks in water.

Image 6.2: IPX5 waterproof rating for sweat and rain resistance.
7. Troubleshooting
If you encounter issues with your TUINYO S12 ear hooks, try the following:
- No Sound: Ensure the ear hooks are properly paired and connected to your device. Check the volume levels on both the ear hooks and your device.
- Pairing Issues: Turn off Bluetooth on your device, then turn it back on. Place the ear hooks back in the case, close it, then open it again to re-enter pairing mode. Forget the device from your Bluetooth list and try pairing again.
- Charging Problems: Ensure the charging cable is securely connected to both the case and a power source. Check if the charging indicators on the case are active.
- Uncomfortable Fit: Adjust the ear hooks as described in Section 5 to find the most secure and comfortable position for your ear shape.
- Intermittent Connection: Ensure there are no obstructions between the ear hooks and your device. Keep your device within the effective Bluetooth range.
8. Specifications
| Model Name | S12 |
| Connectivity Technology | Wireless (Bluetooth) |
| Wireless Communication Technology | Bluetooth V5.4 |
| Water Resistance Level | IPX5 (Water Resistant) |
| Battery Life (Ear Hooks) | Up to 10 Hours |
| Total Standby Time (with Charging Case) | Up to 40 Hours |
| Charging Time | 10 Hours (Note: This likely refers to total usage time, not charging time. Charging time for the case is typically shorter.) |
| Earpiece Shape | Ear Hook |
| Ear Placement | Open Ear |
| Control Method | Remote (Touch Control) |
| Material | Plastic |
| Item Weight | 3.84 ounces |
| Package Dimensions | 3.5 x 3.46 x 1.46 inches |
| Included Components | Wireless Charging Case |
9. Warranty and Support
For warranty information or technical support, please refer to the contact details provided with your purchase documentation or visit the official TUINYO website. Keep your purchase receipt for warranty claims.