Solar Traffic Bollards - BENEDRIVE - Solar Embedded Road . Solar Cell type: Mono crystalline Work temperature: -20℃~+70℃ 4 pcs Ultra bright LEDs 360 degree illuminated, use life over 100 000 hours LED Color: White, yellow, red, blue, green (optional) Battery type: High Quality Ni-MH rechargeable batteries Work Type: Flashing 2 HZ or Constant ON or customizable