On Sale! KESTREL HEADLAMP, 300 Lumens, Rechargeable, 4 Modes, Li-Ion Battery with Mini-USB Charging Bright & Comfortable: 300 Lumen Max Output. Adjustable headband Long Battery Life: 4 power levels Rechargeable Li-Ion Technology: Mini-USB charging port Safety Features: Distress whistle built into headband. SOS flashing pattern if button held Guaranteed: Bright Medic quality with our 100% Satisfaction Guarantee