OFFBONDAGE Bicycle Front Light and Tail Light User Manual

1. Safety Warnings

WARNING: Please read and understand all safety information before using this product.

Please mind potential fire risk and strictly follow the instruction manual for charging and storage.
For disposal, please check your local authority's website for more information and dispose of the lithium-ion battery safely in accordance with the applicable legal requirements.
Keep out of reach of children to prevent accidental operation.
Do not use in damp environments to prevent electric leakage.
Do not aim the light directly into eyes.

2. Product Overview

The OFFBONDAGE bicycle lighting system includes a powerful front light and a smart brake-sensing tail light, designed to enhance cycling safety and visibility.

2.1 Product Names

Bicycle Front Light (Models: HYY2600, HYY900)
Smart Brake Tail Light (Model: WT09S)

2.2 Product Identification

Brand: OFFBONDAGE

OFFBONDAGE HYY900 front bicycle light and GL09S/WT09S tail light. — OFFBONDAGE HYY900 front bicycle light and GL09S/WT09S tail light, showing their general appearance.

3. Specifications

3.1 Front Light (HYY2600)

Feature	Specification
Material	Aluminum Plastic Shell
Modes	4 Modes: Near light, High beam bright, Far and Near full light, Flashing
Waterproof	IPX-5
Lumen	Max 2600 Lumen
Range	About 200-500M
Battery	About 8000 mAh
Charging Time	About 9 hrs (Type-C)
Working Time	2.5-7.5h
Power Bank Function	YES

3.2 Front Light (HYY900)

Feature	Specification
Material	Aluminum Plastic Shell
Modes	5 Modes: Near light, Far light, Far and Near full light, Flicker (Click to open); Daytime running light (Long press to open)
Waterproof	IPX-5
Lumen	Max 900 Lumen
Range	About 200M
Battery	About 2000 mAh
Charging Time	About 3 hrs (Type-C)
Working Time	2-3.5h
Power Bank Function	NO

3.3 Smart Brake Tail Light (WT09S)

Feature	Specification
Material	ABS+PC
Lamp Beads	COB lamp beads
Modes	6 modes
Endurance Time	10-100h
Weight	About 22g
Water Resistance	IPX6
Battery	3.7V/260mAh polymer
Charge Input	5V-0.28A
Intelligent Mode	Yes
Brake Sensing	Yes
Warranty	1 year

Specifications table for WT09S Smart Model tail light. — Detailed specifications for the WT09S Smart Model tail light, including size (33x30x33mm), 6 gear modes, 12h-60h endurance, 400mAh battery, 5V-0.28A charge input, IP66 waterproof, intelligent mode, and brake sensing.

Comparison table of three front light models (HYY900, HYY1400, HYY2600) with dimensions and specs. — This image provides a comparison of three front light models, detailing their dimensions, material (Aluminum + PC), weight, lumen beads (TG3*6, TG3*5, TG3*3), lumen output (1400lm, 2600lm, 900lm), battery life (4000mAh, 8000mAh, 2000mAh), continuity, and charging time (approx. 5h, 5h, 3h via Type-C).

4. Setup and Installation

4.1 Front Light Installation

Mount the front light securely on the handlebar and adjust the angle as needed for optimal visibility.

Place the gasket on the handlebar at a suitable location.
Install the fixed base onto the handlebar.
Adjust the angle card into the lamp groove.
Carefully check that the screw is tight to secure the light.
Ensure the light is firmly in place and the angle is correct for your riding position.

Step-by-step installation of the front bicycle light on a handlebar. — A five-step visual guide demonstrating the installation of the front bicycle light on a handlebar. Steps include placing the gasket, installing the fixed base, adjusting the angle, checking screw tightness, and completing the installation.

4.2 Tail Light Installation

The tail light features an innovative upgrade installation system, allowing mounting on the seat cushion, seat tube, or seat bag.

For Seat Cushion: Use a cable tie to fix both ends of the cushion bracket under the cushion. Place the taillight in the seat cushion bracket and rotate it 90° to complete installation.
For Seat Tube: The seat tube bracket is fixed on the seat tube with a binding. Place the taillight in the tube seat bracket and rotate it 90° to complete installation.

Installation and disassembly steps for the tail light on seat cushion and seat tube. — A six-step visual guide for installing the tail light. It shows how to fix it to a seat cushion bracket with a cable tie and rotate it 90 degrees, and how to fix it to a seat tube bracket with a binding and rotate it 90 degrees.

5. Operating Instructions

5.1 Power On/Off

Front Light: Press and hold the button to turn the light ON/OFF.
Tail Light: Long press the button to enter manual mode. Double-click the button to enter smart mode.

5.2 Mode Switching (Front Light)

Press the button briefly to toggle between different lighting modes.

HYY2600: Cycles through Near light, High beam bright, Far and Near full light, and Flashing modes.
HYY900: Cycles through Near light, Far light, Far and Near full light, and Flicker modes with a single click. Long press to activate Daytime Running Light.

Five adjustable light patterns for the front bicycle light. — Illustrates five adjustable light patterns for the front light: Low beam, In the model (medium), Vision light pattern (high), Slow flash mode, and Day light mode, with instructions on how to activate each.

5.3 Mode Switching (Tail Light)

The WT09S tail light offers 6 modes, including intelligent sensing.

Intelligent and manual two modes for the tail light. — Shows the tail light with text indicating 'Long press to start --- manual mode' and 'Double - click Boot --- smart mode'.

Six light gears for the tail light. — Displays the tail light and lists six light modes: Steady light, Respiratory flash, Slow flash, Rhythm flash, Endurance flash, and Flash.

5.4 Intelligent Sensing (Tail Light)

The WT09S tail light features a built-in high-precision intelligent induction chip for enhanced safety.

Automatic Wake-up: In dark conditions, when cycling, the tail light will automatically turn on.
Auto Sleep: In light conditions, when cycling, the tail light will automatically turn off. If in dark conditions and you stop riding, the tail light will delay turning off for 45 seconds.
Brake Warning: When cycling and slowing down, the brake light will highlight for 3 seconds, relaying a deceleration message to the rear for additional safety.

Diagram explaining automatic intelligent mode functions of the tail light. — A diagram illustrating the intelligent mode functions: automatic wake-up (dark + cycling = tail light on), auto sleep (light + cycling = tail light off), auto sleep (dark + stop riding = tail light off after 45 seconds delay), and brake warning (cycling + slow down = brake light highlighted for 3 seconds).

Smart brake tail light with built-in high precision intelligent induction chip. — Highlights the smart brake tail light's built-in high-precision intelligent induction chip that accurately detects braking, causing the tail light to highlight for 3 seconds to relay deceleration messages and provide additional safety warnings.

6. Charging

Both the front and tail lights are equipped with convenient Type-C charging ports.

6.1 Front Light Charging

Connect the provided Type-C USB cable to the charging port on the light and to a suitable USB power source.
Charging time for HYY2600 is approximately 9 hours.
Charging time for HYY900 is approximately 3 hours.

Convenient Type-C charging port on the front bicycle light. — Close-up view of the Type-C charging port on the front light, indicating quick and easy charging.

6.2 Tail Light Charging

Connect the Type-C USB cable to the tail light's charging port and a USB power source.
The tail light has a 3.7V/260mAh polymer battery.
A full charge takes approximately 2 hours.
Power indicator lights show current battery status: Black (30%-80%), Green (80% above), Red (30% below).

Type-C quick charging for the tail light with power indicator. — Shows the tail light connected to a power bank via a Type-C cable. It indicates power levels with indicator lights: black (30%-80%), green (80% above), red (30% below). Optimized Type-C charging jack, 2 hours for full charge.

7. Maintenance and Care

7.1 General Precautions

Avoid prolonged use in heavy rainy conditions to prevent water ingress, despite the waterproof rating.
Do not disassemble the battery compartment arbitrarily to avoid damaging the circuitry.
Clean the light surfaces with a soft, damp cloth. Do not use abrasive cleaners or solvents.

7.2 Waterproofing

Front Light: Rated IPX5, resistant to water jets from any direction.
Tail Light: Rated IPX6, resistant to powerful water jets and dustproof.

Front bicycle light shown in a waterproof environment with water droplets. — The front light is shown covered in water droplets, illustrating its aluminum alloy body's resistance to wind and rain, confirming its waterproof design.

Tail light shown in a rainy environment, highlighting IP66 protection class. — The tail light is depicted in a rainy setting, emphasizing its IP66 protection class, indicating it is dustproof and resistant to storms, wind, and rain.

8. Troubleshooting

8.1 Light does not turn on

Check whether batteries are installed correctly (if applicable) or ensure the internal battery is charged.
Try replacing with new batteries (if applicable) or recharging the device.

8.2 Dim illumination

Battery power may be insufficient; recharge or replace batteries.

8.3 No response to operation

Verify that the button functions properly.
Try restarting the device by holding the power button or allowing the battery to fully discharge and then recharging.

9. User Tips

If your light is not turning on or charging, ensure the charging cable is securely connected and the battery has sufficient charge. If issues persist, refer to the troubleshooting section or contact support.
For handlebar mounting, ensure the bracket is compatible with your handlebar diameter. If a replacement bracket is needed, contact customer support.
Regularly check the tightness of all mounting screws and brackets to prevent the lights from shifting during rides.

10. Warranty and Support

The OFFBONDAGE WT09S Smart Brake Tail Light comes with a 1-year warranty. For other models, please refer to your purchase documentation.

For detailed warranty information, technical support, or to access the full user manual PDF, please visit the product's official support page or contact OFFBONDAGE customer service.

A comprehensive user manual (PDF) is available for download. Please visit the product's official support page for the latest version.

OFFBONDAGE HYY2600, HYY900, WT09S