Introduction
This manual provides detailed instructions for the use, setup, and maintenance of your BACKWIN Wired Earbuds, Model B870. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.

The BACKWIN Wired Earbuds, featuring a 3.5mm jack and in-line controls, are designed for a wide range of audio devices.
Contenu du colis
Vérifiez que tous les éléments sont présents dans le colis :
- BACKWIN Wired Earbuds (Model B870)
- Ear Cushions (3 pairs: Small, Medium, Large)
- Étui de protection
- Manuel d'instructions (ce document)

Image showing the BACKWIN Wired Earbuds along with the included ear tips in various sizes and a protective pouch.
Installation
1. Choisir les bons embouts auriculaires
Proper ear tip selection is crucial for comfort, sound quality, and noise isolation. Experiment with the included Small (S), Medium (M), and Large (L) ear tips to find the best fit for your ears.
- Retirez délicatement les embouts auriculaires préinstallés.
- Choisissez des embouts auriculaires confortables qui assurent une bonne étanchéité dans votre conduit auditif.
- Appuyez fermement les nouveaux embouts auriculaires sur les embouts des écouteurs jusqu'à ce qu'ils soient bien fixés.

Illustration demonstrating the ergonomic design of the earbuds and the three included ear tip sizes (S, M, L) for optimal fit.
2. Connexion à votre appareil
The BACKWIN Wired Earbuds feature a standard 3.5mm audio jack for broad compatibility.
- Locate the 3.5mm audio jack on your smartphone, tablet, laptop, desktop PC, MP3 player, or game console.
- Insert the earbud's 3.5mm plug firmly into the device's audio jack until it clicks into place.
- Assurez-vous que la connexion est sécurisée afin d'éviter les interruptions audio.

The 3.5mm audio jack ensures wide compatibility with various devices including laptops, desktop PCs, smartphones (Android, iPhone), tablets (iPad), game consoles, and MP3 players.
Mode d'emploi
In-line Remote Control Functions
The in-line remote allows for easy control of audio playback and calls without needing to access your device.

Détaillé view of the multi-function in-line remote control, illustrating button functions for volume adjustment, track navigation, and call management.
- Augmenter le volume (+): Appuyez pour augmenter le volume.
- Baisser le volume (-): Appuyez pour diminuer le volume.
- Bouton multifonction (centre) :
- Appuyez une fois : Play/Pause audio; Answer/End call.
- Appuyez deux fois sur: Piste suivante.
- Triple pression: Piste précédente.
- Microphone intégré : Located on the remote, allows for hands-free calling. Position the microphone near your mouth for clear communication.
Features and Technology
Four-Speaker Sound System
Each earbud is equipped with two speakers: a moving coil speaker for powerful bass and an iron ring speaker for clear highs and noise reduction. This dual-driver design delivers a balanced and immersive audio experience.

Anatomy of the earbud's internal structure, highlighting the dynamic coil for bass and moving iron for treble, contributing to HiFi stereo sound.
Anti-Tangle Cable Design
The earbud cable is constructed from soft and elastic aerospace TPE hollow material, reinforced with copper wire and fiber. This design provides excellent durability, abrasion resistance, and significantly reduces tangling, ensuring a smooth user experience, especially during gaming with 0 latency.

Detailed cross-section of the TPE noise reduction cable, showing its robust construction with 244 copper cores and 200D bulletproof wire for durability and tangle prevention.
Indice de protection IP67 contre la poussière et l'eau
The earbuds are rated IP67, offering protection against dust ingress and immersion in water up to 1 meter for 30 minutes. This makes them suitable for use during workouts or in light rain, but they are not intended for swimming or prolonged submersion.
Entretien et soins
- Nettoyage: Nettoyez régulièrement les embouts d'oreille avec un chiffon doux et sec.amp cloth. For the earbud nozzles, gently wipe away any earwax or debris using a dry cotton swab. Do not use harsh chemicals or abrasive materials.
- Stockage: Lorsqu'ils ne sont pas utilisés, rangez les écouteurs dans l'étui de protection fourni afin d'éviter qu'ils ne s'emmêlent et ne s'abîment.
- Exposition à l'eau : While IP67 rated, avoid unnecessary exposure to water. If they get wet, dry them thoroughly before storing or using again. Do not charge or connect to a device if the jack is wet.
- Entretien des câbles : Avoid sharp bends or excessive pulling on the cable to maintain its integrity.
Dépannage
| Problème | Cause possible | Solution |
|---|---|---|
| Pas de son ou volume faible |
|
|
| Distorsion du son ou crépitement |
|
|
| Le microphone ne fonctionne pas |
|
|
Caractéristiques
| Nom du modèle | B870 |
| Technologie de connectivité | Filaire (prise jack 3.5 mm) |
| Configuration des haut-parleurs | Four-speaker system (Moving Coil + Iron Ring per earbud) |
| Matériau du câble | Aerospace TPE hollow material with copper wire and fiber |
| Indice de résistance à l'eau | IP67 (Résistant à la poussière et à l'eau) |
| Type de contrôle | In-line Volume Control, Multi-function Button |
| Microphone | Intégré |
| Placement des oreilles | Dans l'oreille |
| Contrôle du bruit | Isolation acoustique |
| Poids de l'article | 1.13 onces |
Garantie et assistance
The BACKWIN Wired Earbuds (Model B870) come with a Garantie de 2 ans À compter de la date d'achat, cette garantie couvre les défauts de fabrication et de main-d'œuvre dans des conditions normales d'utilisation.
La garantie ne couvre pas :
- Dommages causés par une mauvaise utilisation, un abus, un accident ou une négligence.
- Usure normale.
- Réparations ou modifications non autorisées.
- Damage from improper storage or extreme environmental conditions.
For warranty claims or technical support, please contact BACKWIN customer service through the retailer where the product was purchased or visit the official BACKWIN website pour les coordonnées.
Veuillez conserver votre preuve d'achat pour la validation de la garantie.



