- Model
- YH301 rechargeable hat light
- Battery
- Polymer 3.7V, 300 mAh
- Charging
- USB-C. Full in 1–2 hours. Red while charging, green when full.
- Standby
- Less than 20 µA
- Switch
- Trigger button
- Modes
- 100% full, 50%, 25%, SOS, off
- LED
- 3 × 2835, 6500K
- Output
- About 70 lm ±15% at full brightness, depending on battery level
- Power
- 0.5W ±15% at full brightness
- Runtime
- Full about 2.5 hours; half about 4–5 hours; low about 8–10 hours. Brightness falls if left on.
- Cycle life
- More than 500 cycles
- Temperature
- −20°C to 45°C. Below −20°C the battery only charges and discharges about 60%.
- Ingress
- IPX4
- Cover
- PC, transparent
- Housing
- PP. The sheet lists the lamp housing as blue; the module shown is the black unit aimed downward.
- Fixing ring
- PVC, black
- USB plug
- Rubber, black
Figures are from the YH301 electrical design sheet. The lamp is fitted under the baseball-cap brim; other knit-cap lights are listed as separate products.
