The HL21 headlamp features a lightweight headband, CREE emitter, and a compact design. It runs off a single AA battery and puts out up to 90 lumens.

• Cree XP-E LED (R2) with lifespan of 50,000 hours
• Three levels of brightness
  -Lighting mode: 90 lumens (2h3min) -> 3 lumens (53h) -> 43 lumens (5h43min) -> SOS
• Max beam length: 93 meters
• Electronic switch
• Digitally regulated output - maintains constant brightness
• Output automatic memory function
• Uses one 1.5V AA ( Alkaline, Ni-MH, Lithium ) battery
• Assembled structure design
• Lighting head:64.3mm / 2.53in (Length) x 50mm / 1.97in (Width) x 38.5mm / 1.51in (Height)
• Lighting head is made of aircraft-grade aluminum, the rest parts are made of high quality plastic
• Premium Type III hard-anodized anti-abrasive finish
• Weight: 49.5g / 1.75oz (excluding battery)
• Waterproof to IPX-8 Standard (Submarine to 2 meters deep water for 30 minutes continuous lighting)
• Toughened ultra-clear glass lens with anti-reflective coating
• Including accessory: Fenix diffuser lens