1. ulbra bright LED light. 2. high intensity LED( 8 LED) 3. adjustable head strap held. 4. keep lamp from bouncing. 5. adjustable inclination 6. use 3 pcs AAA battery. inner packing: 1 pc/polycard outer packing: 100 pcs/cton dimension: 62*42*68 cm weight: 16 kg