The Zone 0 head torch has three LEDs. All three can be activated for full brightness, or just one to extend battery life. Both rubber and cloth headstraps are included for convenience.

Full Specification
Atex Approvals II 1 G Ex ia op is IIC T4 Ga
Beam Distance (Max) - 28 metres
Beam Intensity (Max) - 194 candelas
Lumens (Max) - 30
Max Run Time (hours) - 47
Battery Type - AAA (included)

(Image shows helmet which isn't included)