1. Introduktion
Thank you for choosing the Stiive Bluetooth Headphones U8I. These wireless sports earbuds are designed to provide a high-quality audio experience with features tailored for active lifestyles, including IPX7 waterproofing, Bluetooth 5.3 connectivity, and a comfortable, secure fit. This manual will guide you through the setup, operation, and maintenance of your new headphones to ensure optimal performance and longevity.

Figure 1.1: Stiive Bluetooth Headphones U8I and included charging case.
2. Pakkens indhold
Kontroller venligst, at alle varer er til stede i din pakke:
- Stiive Bluetooth Headphones (1 unit)
- Wire Clip (1 unit)
- Eartips (4 pairs: XS/S/M/L)
- USB-opladningskabel (1 enhed)
- Brugervejledning (dette dokument)
3. Produktfunktioner
The Stiive U8I headphones are equipped with advanced features for an enhanced audio experience:
3.1 Bluetooth 5.3-forbindelse
Experience a low-latency, fast, and stable connection with Bluetooth 5.3 technology. This ensures clear sound, stable calls, and perfect audio-video synchronization, making them ideal for all-day use during workouts or daily activities.

Figure 3.1: Key features of the Stiive U8I headphones.
3.2 Amazing Audio Experience
Equipped with dynamic drivers, these wireless earbuds deliver authentic sound and powerful bass. The integrated noise-canceling microphone filters background noise, ensuring clear voice capture during calls, even in noisy environments.

Figure 3.2: Internal structure highlighting high-fidelity stereo sound components.
3.3 IPX7 vandtæt beskyttelse
With an IPX7 waterproof rating and interior nano-coating technology, the U8I headphones are designed to effectively withstand sweat, light rain, and accidental splashes. This ensures reliable performance during intense workouts or outdoor activities.

Figure 3.3: IPX7 waterproof design for protection against sweat and rain.
3.4 Forlænget spilletid
The rechargeable battery provides up to 16 hours of playtime on a single 2-hour charge. The remaining battery power can be displayed on your connected phone screen, allowing you to monitor usage and plan charging accordingly.

Figur 3.4: Batterilevetid og opladningsvarighed.
3.5 Super Soft and Secure Fit
Designed with a lightweight and ergonomic structure, these sport headphones offer a combination of comfort and stability. The ear-hook and in-ear fitting are ideal for strenuous workouts. Four sizes of eartips (XS/S/M/L) are included to ensure a perfect fit for various ear shapes.

Figur 3.5: Ergonomisk design for sikker og komfortabel pasform.
4. Opsætning
4.1 Opladning af hovedtelefonerne
Before first use, fully charge the headphones. Use the provided USB charging cable to connect the headphones to a USB power source (e.g., computer USB port, wall adapter). The LED indicator on the headphones will show charging status. A full charge takes approximately 2 hours.
Note: Please use the charging cable that comes with the product for optimal charging.
4.2 Parring med en Bluetooth-enhed
- Sørg for, at hovedtelefonerne er slukket.
- Press and hold the Multi-function Button (MFB) on the headphones until the LED indicator flashes red and blue alternately. This indicates pairing mode.
- Gå til Bluetooth-indstillingerne på din Bluetooth-aktiverede enhed (smartphone, tablet, bærbar computer).
- Søg efter available devices. Select "Stiive U8I" (or similar name) from the list.
- Once connected, the LED indicator on the headphones will flash blue slowly or turn off, depending on the model. A voice prompt may confirm the connection.
- Hvis du bliver bedt om en adgangskode, skal du indtaste "0000".
Hovedtelefonerne genopretter automatisk forbindelse til den sidst parrede enhed, når de tændes, hvis enhedens Bluetooth er aktiv og inden for rækkevidde.
4.3 Sådan tager du hovedtelefonerne på
For optimal sound quality and comfort, choose the correct size eartips. Gently insert the earbuds into your ear canal and adjust the flexible ear hooks over your ears to secure them in place. The wire clip can be used to manage cable length behind your neck.
5. Betjeningsvejledning
5.1 Tænd/sluk
- Tænd: Press and hold the MFB for approximately 3 seconds until the LED indicator flashes blue and a voice prompt confirms.
- Sluk: Press and hold the MFB for approximately 3-5 seconds until the LED indicator flashes red and a voice prompt confirms.
5.2 Kontrol af musikafspilning

Figure 5.1: Headphone control functions.
- Afspil/pause: Tryk én gang på MFB.
- Lydstyrke op: Tryk på knappen "+".
- Skrue ned for lyden: Tryk på knappen "-".
- Næste nummer: Tryk og hold "+"-knappen nede i 2 sekunder.
- Forrige nummer: Tryk og hold "-"-knappen nede i 2 sekunder.
5.3 Opkaldshåndtering
- Besvar/afslut opkald: Press the MFB once during an incoming call or during an active call.
- Afvis opkald: Tryk og hold MFB-knappen nede i 2 sekunder under et indgående opkald.
- Genopkald sidste nummer: Dobbelttryk på MFB-knappen, når du ikke er i gang med et opkald.
5.4 Aktivering af stemmeassistent
Triple-press the MFB to activate your device's voice assistant (e.g., Siri, Google Assistant).
6. Vedligeholdelse
6.1 Rengøring
Regelmæssig rengøring hjælper med at opretholde hovedtelefonernes ydeevne og hygiejne:
- Wipe the earbuds and ear hooks with a soft, dry, lint-free cloth.
- Fjern ørepropperne, og rengør dem med mild sæbe og vand. Sørg for, at de er helt tørre, før du sætter dem på igen.
- Brug ikke slibende rengøringsmidler, alkohol eller kemiske opløsningsmidler.
6.2 Opbevaring
When not in use, store the headphones in their original case or a protective pouch to prevent damage from dust, dirt, and tangling.

Figure 6.1: Storing headphones in their case for protection.
6.3 Vandtæthed
The headphones are IPX7 waterproof, meaning they can withstand immersion in up to 1 meter of water for 30 minutes. However, they are not designed for swimming or prolonged submersion. Ensure the charging port is dry before charging to prevent damage.
7. Fejlfinding
If you encounter issues with your Stiive U8I headphones, please refer to the following common problems and solutions:
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Hovedtelefonerne tændes ikke. | Lavt batteri. | Oplad hovedtelefonerne helt. |
| Kan ikke parres med enheden. | Hovedtelefoner er ikke i parringstilstand; Bluetooth slukket på enheden; enheden er for langt væk. | Ensure headphones are in pairing mode (flashing red/blue). Turn on Bluetooth on your device. Move device closer to headphones (within 10 meters). Clear previous Bluetooth connections on your device. |
| Ingen lyd eller lav lydstyrke. | Lydstyrken på hovedtelefoner eller enhed er for lav; hovedtelefoner er ikke tilsluttet. | Increase volume on both headphones and connected device. Ensure headphones are properly paired and connected. |
| Intermitterende forbindelse. | Interferens; enhed for langt væk; lavt batteri. | Move away from sources of strong electromagnetic interference. Keep device within 10 meters. Charge headphones. |
| Mikrofon virker ikke. | Microphone muted on device; poor connection. | Check microphone settings on your device. Ensure a stable Bluetooth connection. |
8. Specifikationer
Detailed technical specifications for the Stiive Bluetooth Headphones U8I:
| Feature | Detalje |
|---|---|
| Modelnavn | U8I |
| Forbindelsesteknologi | Trådløs (Bluetooth) |
| Bluetooth version | 5.3 |
| Bluetooth rækkevidde | Op til 10 meter (33 fod) |
| Vandmodstandsniveau | IPX7 |
| Batterilevetid (spilletid) | Op til 16 timer |
| Opladningstid | Cirka 2 timer |
| Hovedtelefonstik | USB (til opladning) |
| Kontroltype | Volume Control, Call Control, Touch (Multi-function Button) |
| Mikrofon | Built-in, Noise-canceling |
| Ørestykke form | Angular/Rounded, In-Ear with Ear Hooks |
| Varens vægt | 0.63 ounces (ca. 17.8 gram) |
| Produktdimensioner | 1.4 x 0.57 x 0.58 tommer |
9. Garanti og support
9.1 Garantioplysninger
Stiive products are manufactured to the highest quality standards. This product is covered by a limited warranty against defects in materials and workmanship from the date of original purchase. Please retain your proof of purchase for warranty claims. The warranty does not cover damage caused by misuse, accident, unauthorized modification, or normal wear and tear.
9.2 Kundesupport
For technical assistance, warranty claims, or general inquiries, please contact Stiive customer support through the retailer's platform or the official Stiive brand store. Please have your product model number (U8I) and purchase details ready when contacting support.