| 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.

System Compatibility- 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 |