The Nitecore HC33 is an uprated version of the popular HC30. The HC33 provides a maximum of 1800 lm. Performance and Running Time (1 x 18650 Li-Ion Battery NL1835HP) Turbo (1800 lumens) for approximately 30 minutes * High (780 lumens) for approximately 1 hour 30 minutes * Mid (240 lumens) for approximately 5 hours 15 minutes Low (70 lumens ) for about 15 hours Ultra-Low (1 lumen) for about 300 hours Strobe SOS Beacon * the values are calculated values Scope of delivery: Nitecore HC33, headband, clip, replacement switch rubber Technical data Length: approx. 106 mm Head diameter: approx. 25, 5 mm x 24, 2 mm Housing diameter: approx. 23, 8 mm Weight without batteries / rechargeable battery: approx. 51, 2 g Illuminant: CREE XHP35 HD LED Illuminance: max. 1800 lm headlight range: approx. 187 m Aircraft aluminum housing, HAIII anodised coated mineral lens waterproof to IPX68 ATR temperature control Magnetic base Battery level indicator Note : Item doesn’t includes battery