Mini-headlight: 3 watt super bright LED, use 3xAAA battery(W/O), aluminum shell, adjustable focus system makes differert light. Mini-headlight: 3 watt super bright LED, use 3xAAA battery(W/O), aluminum shell, adjustable focus system makes differert light. adjustable inclination and elastic headband. Product size: 57.6x43.5x73mm Net weight: 100gLED Type: 120 Lumens CREE LED