The Author 280255 rear bike light uses 24 COB LEDs and delivers up to 50 lm. It has three constant-brightness modes and four flashing patterns, and remembers the last mode used.

When the battery level is low, it automatically switches to power-saving mode, providing 45 minutes of backup runtime. The LED indicator shows the battery capacity and charging status.

• Type: Rear
• Light output: 50 lm
• Light source: 24 COB LEDs
• Constant-brightness modes: 50 lm for 2 hours, 25 lm for 4.5 hours and 12 lm for 8 hours
• Flashing patterns: 4
• Flashing runtime: Approximately 6–8 hours
• Backup runtime: 45 minutes
• Protection rating: IP65
• Battery: Li-pol, 3.7 V, 400 mAh
• Battery charge cycles: At least 500
• Rechargeable: Yes
• Charging port: USB-C
• Charging cable: USB-A / USB-C
• Charging time: Up to 2 hours
• Dimensions: 38 × 29 × 30 mm
• Weight: 21 g
• Battery capacity indicator: Green LED for 21–100%, red LED for 1–20%
• Charging indicator: Red LED while charging, green LED when fully charged
• Charging and maintenance: Charge for at least 30 minutes every 3 months, at an ambient temperature of 5–40 °C