Vintage Brushed Copper Extreme Challenge Lighter. Metal injected body and highly resistant semi-rigid protective cover. Blue torch flame, powerful and wind-resistant. Defi Extreme is effective in the coldest temperatures (-6°C) to the hottest temperatures ( 45°C) and operates at altitudes of over 2400 meters.. Works at an altitude of over 2400m. Associated gas refill: red for Extreme Challenge; XXtrême (REF 900436). Lighter delivered empty of gas, refill sold separately.