The Green Dot Light Mini, are a thin compact dive light specifically designed for signalling, ultra efficient and bright. Delivers a sharp beam, this focused light are ideal for underwater communication. Light source Green Dot Light. Light output Below 5 mW. Casing material Aluminum alloy. Anti-corrosive anodized. Power source 2 x AAA Alkaline or Ni-MH batteries. Wavelength 520 nm. Burn time Up to 7 hrs. Maximum depth 100 m tested. Size Dia. 17 x L. 114.1mm. Weight in air 60 g (including battery). Buoyancy in seawater -35 g (including battery). Switching system Twisting bezel. Front glass Tempered optical glass. Included lanyard.