1. Introducció
Thank you for choosing the XOSS XR PRO Smart Bike Tail Light. This manual provides detailed instructions for the proper use, installation, and maintenance of your new tail light. Please read this manual thoroughly before using the product to ensure optimal performance and safety.

Image: The XOSS XR PRO Smart Bike Tail Light, a compact black unit with a bright red circular LED array, designed for rear visibility on bicycles.
2. Característiques clau
- Smart Brake Sensor & Auto On/Off: Automatically detects braking and illuminates brightly for 3 seconds. Turns off after 30 seconds of inactivity and reactivates upon vibration.
- Bateria recarregable USB-C: Equipped with a 300mAh Type-C rechargeable Lithium Battery, offering extended use (18-36 hours in low mode, 12-24 hours in medium, 8-16 hours in high) after a full charge.
- Easy Installation & Versatile Mounting: Features two mounting options: under the saddle with a metal bracket or to the seat post with an adjustable silicone strap.
- IPX6 Waterproof & Durable Construction: Designed with IPX6 water resistance and robust materials for reliable performance in various weather conditions.
- Múltiples modes d'il·luminació: Offers 4 lighting modes with brightness control (Low, Medium, High).
3. Contingut del paquet
Abans de continuar amb la instal·lació, comproveu que tots els elements siguin presents al paquet:

Image: The contents of the XOSS XR PRO package, including the tail light unit, USB-C charging cable, saddle mounting bracket, seat post strap, and zip ties.
- XOSS XR PRO Smart Bike Tail Light Unit
- Cable de càrrega USB-C
- Saddle Mounting Bracket
- Adjustable Silicone Strap for Seat Post Mounting
- Zip Ties (for saddle mount)
4. Configuració i instal·lació
4.1 Càrrega del dispositiu
Before first use, fully charge the XOSS XR PRO tail light. Connect the provided USB-C cable to the charging port on the device and the other end to a USB power source (e.g., computer, wall adapter, power bank). The indicator light will show charging status and turn off when fully charged.

Image: The XOSS XR PRO tail light connected to a laptop via its USB-C charging cable, illustrating the charging process.
4.2 Opcions de muntatge
The XOSS XR PRO offers two primary mounting methods:
4.2.1 Saddle Mounting
- Attach the metal saddle mounting bracket to the rails under your bicycle saddle using the provided zip ties. Ensure it is securely fastened and does not interfere with saddle adjustment.
- Slide the XOSS XR PRO tail light onto the bracket until it clicks into place.

Image: A bicycle with the XOSS XR PRO tail light mounted securely under the saddle, demonstrating the saddle mounting option.
4.2.2 Seat Post Mounting
- Wrap the adjustable silicone strap around your bicycle's seat post.
- Secure the XOSS XR PRO tail light to the strap, ensuring it is positioned vertically and facing directly backward. Adjust the strap for a snug fit.

Image: The XOSS XR PRO tail light mounted on a bicycle's seat post using the silicone strap, showing the seat post mounting option.
5. Instruccions de funcionament
5.1 Encès/Apagat
- Encès/apagat manual: Premeu i manteniu premut el botó d'engegada durant 2 segons per encendre o apagar la llum.
- Encès/apagat automàtic intel·ligent: The light will automatically turn on when riding vibration is detected and turn off after 30 seconds of motionlessness. It also features smart light sensing, turning off in bright environments and on in dim conditions.

Image: Two images side-by-side showing a bicycle seat post with the tail light. The left image shows the light off when motionless, and the right image shows the light on when vibration is detected, illustrating the auto on/off feature.

Image: A cyclist riding at night with the XOSS XR PRO tail light illuminated, demonstrating the smart light sensing auto on/off feature in a dim environment.
5.2 Switching Lighting Modes
With the light on, short press the power button to cycle through the available lighting modes:
- Normalment activat
- Flaix de respiració
- Flash ràpid
- Flash lent

Image: Four distinct images showing the XOSS XR PRO tail light in different modes: Normally On, Breathing Flash, Fast Flash, and Slow Flash, illustrating the various lighting patterns.
5.3 Ajust de la brillantor
When the light is off, long press the button to adjust the brightness level: Low, Medium, High. The selected brightness will be applied when the light is turned on.
5.4 Smart Brake Sensing
The integrated smart brake sensor will detect deceleration and automatically increase the light's brightness to a highlight for 3 seconds, providing a clear warning to following riders or vehicles.

Image: A cyclist on a bike with the XOSS XR PRO tail light showing an elongated red light trail, indicating the bright highlight activated during brake sensing.
5.5 Team Synchronized Flashing (If applicable)
If you have multiple XOSS XR PRO lights, you can enable synchronized flashing. Double click the button to activate synchronized flashing with other compatible devices within a maximum available distance of 50 meters.

Image: A group of cyclists riding at night, with their XOSS XR PRO tail lights flashing in synchronization, demonstrating the team sync feature.
6. Manteniment
- Neteja: Netegeu la llum amb un suau, damp tela. No utilitzeu netejadors abrasius ni dissolvents.
- Càrrega: Recharge the battery regularly, especially if the light will not be used for an extended period, to maintain battery health.
- Emmagatzematge: Guardeu la llum en un lloc fresc i sec, allunyat de la llum solar directa quan no l'utilitzeu.
- Resistència a l'aigua: While IPX6 waterproof, avoid prolonged submersion in water. Ensure the USB-C port cover is securely closed before exposure to water.

Image: The XOSS XR PRO tail light mounted on a bicycle seat post, with water droplets visible on its surface, illustrating its IPX6 waterproof rating.
7. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| La llum no s’encén. | La bateria està esgotada. | Charge the light fully using the USB-C cable. |
| La llum s'apaga de manera inesperada. | Auto-off feature activated (no motion for 30s). | Resume riding; the light should reactivate. Ensure the light is not in a very bright environment if auto-off by light sensing is suspected. |
| Brake sensing not working. | Light not mounted securely or positioned incorrectly. | Ensure the light is firmly mounted and oriented vertically. Test with clear braking actions. |
| Cannot switch modes/brightness. | Incorrect button press duration. | Short press to change modes when ON. Long press when OFF to adjust brightness. |
8. Especificacions
| Característica | Detall |
|---|---|
| Model | XR PRO |
| Marca | XOSS |
| Color | Negre |
| Material | Silicona, metall |
| Font d'alimentació | Alimentat per bateria (USB-C recarregable) |
| Capacitat de la bateria | Bateria de liti de 300 mAh |
| Nivell de resistència a l'aigua | IPX6 impermeable |
| Tipus de muntatge | Seat Mount, Seat Post Mount |
| Nombre de configuracions | 4 Lighting Modes + Brightness Control |
| Posició de peces d'automòbil | posterior |
| Pes de l'article | 3.52 unces |
| País d'origen | Xina |
9. Garantia i Suport
For warranty information and technical support, please refer to the official XOSS weblloc web o contacteu directament amb el seu servei d'atenció al client. Conserveu el rebut de compra com a comprovant de compra.
XOSS Official Store: Visit the XOSS Store on Amazon





