The Sonashi Rechargeable LED Torch SLT-2511Z features AEROSPACE GRADE ALUMINUM BODY and ZOOM FUNCTION ON-HIGH-MEDIUM-LOW- STROBE-SOS-OFF. Additional highlights include CORROSION RESISTANT/WATER RESISTANT/ SHOCK RESISTANT, 130000 HOURS LIFE FOR LED BULB, 8000mAh LITHIUM RECHARGEABLE BATTERY.