Specifications: 1. Solar cell: 0.3W 2. Flashing frequency: 60 - 300Hz 3. Storage battery: 1.2V/1300mAH Ni-MH storage battery 4. Light source: 4 pcs yellow LED 5. Visibility: 1km 6. Operating temp: -20ºC- 80ºC 7. Working time: 10-12 Hrs/day, 12-15 continuous cloudy/ rainy days 8. Flashing time: 120-180 time/ min Function: 1. Easy installation, no maintenance 2. Saves power, no additional expenses, environmentally friendly, no pollution 3. Solar energy-based power source 4. Brightness sensitive auto-switch, automatically turns on at night and turns off at dawn