Explosion proof grade: Ex db IIC T6 Gb/Ex tb IIIC T80 ℃ Db● Rated voltage: DC3.7V● Battery capacity: 1.9, 2.2, 2.6, 2.2Ah● Power: 3W, 3W, 5W, 5W● Charging time: ≤ 8h● Working hours:● Type A - Strong light ≥ 4h, working light ≥ 8h● Type B - Strong light ≥ 8h, working light ≥ 16h● Type C - Strong light ≥ 8h, working light ≥ 16h● D-type - Strong light ≥ 4h, working light ≥ 8h