| Model name | TB03 |
| Model no. | TB03 |
| S/N | 0044-1 |
| Light output | High : 5500mcd / 20 lumens Standard : 2500mcd / 10 lumens |
| Light source | LED*18 (Red) |
| Power source | Battery (3.7V / 400mAh) |
| Runtime | High : 5.5 hours Standard : 11.5 hours |
| Charge time | 2.5 hours |
| Charge require | Built-in USB-C, 5V 1A |
| Low power indicator | Yes |
| Charging indicator | Yes |
| Memory Function | Yes |
| IP rating | IP56 |
| Operating temperature (°C) | -10 ~ +50 |
| Material | Plastic |
| Weight (w/o bracket) | 27g |
| Dimension (WXHXL) | 20 x 77.7 x 21.7 mm (w/o bracket) |
| Mounting bracket | Universal ø 22.2-35mm |
| Compliance | CE / RoHS / REACH |
| Type of approval | StVZO-K / ISO 6742 |
| Approval number | ~ K 2644 |
Built for safety and trust, our lights carry the K-Mark certification under Germany’s StVZO road regulations. They also meet key international standards, including ISO 6742, CE, RoHS, and REACH compliance, ensuring reliable performance and responsible manufacturing.

Q1. What is the difference between TB01, TB02, TB03 and TB04?
The TB01 and TB02 are battery-powered rear lights designed primarily for visibility in everyday cycling.
The TB03 and TB04 are road-oriented versions featuring StVZO-K and ISO 6742 compliance. TB03 provides steady rear-light output, while TB04 adds intelligent brake warning functionality.
| Feature | TB01 | TB02 | TB03 | TB04 |
| Battery powered | ✓ | ✓ | ✓ | ✓ |
| USB-C charging | ✓ | ✓ | ✓ | ✓ |
| IP56 | ✓ | ✓ | ✓ | ✓ |
| Memory function | ✓ | ✓ | ✓ | ✓ |
| Low battery indicator | ✓ | ✓ | ✓ | ✓ |
| Brake warning | — | ✓* | — | ✓** |
| StVZO-K | — | — | ✓ | ✓ |
| ISO 6742 | — | — | ✓ | ✓ |
| Max. output | 35 lm | 90 lm | 20 lm | 90 lm |
| Universal Ø22.2–35 mm mount | ✓ | ✓ | ✓ | ✓ |
* Equipped with Brake Warning, Emergency Alert, and Crash Alert. Brake Warning and Emergency Alert activate only in Brake mode, while Crash Alert operates continuously across all modes.
** Equipped with Brake Warning, Emergency Alert, and Crash Alert functions. Please note: Emergency Alert and Crash Alert are only activated when Brake Warning mode is enabled, ensuring integrated and enhanced rider safety.
User Manual- Download
Designed for riders who commute daily and can’t afford to be caught without a rear light. Delivers up to 11.5 hours on Standard mode, with a built-in low battery indicator that alerts you in time to charge before the next ride.
Crafted with premium, IP56 water-resistant materials and reinforced construction for reliable protection, durability, and consistent performance in demanding cycling environments.
An integrated USB-C cable keeps charging effortless and cuts spare-cable waste, making day-to-day use simpler and more sustainable.
Fits round and aero seat posts from Ø22.2 to 35 mm. Precision optics maintain a level rearward beam across seat tube angles from 70° to 90°, compatible with virtually all bicycle types, including city, trekking, road, gravel, XC, and MTB.
Patented magnetic quick-release snaps securely and removes in seconds—easy to take off for charging and back on before every ride.
Features 2 steady output modes with a smart memory function that recalls your last setting at power-on—no scrolling through options at the start of every ride.
| Weight | 0.12 kg |
|---|---|
| Dimensions | 5 × 3.5 × 12 公分 |
| Light Type | Tail Lights |
| Power source | Rechargeable Battery |
| Mounting | Seatpost |
| Max. Light output | < 50 Lumens (Be Seen) |
| Riding scenario | City/ Urban Area, Rural Area |
| Compliance | CE, ISO-6742, RoHS/ REACH, StVZO-K |
| Mounting Position | Universal ø22.2-35mm |
| Mount / Bracket | Magnet Mounting Bracket |