Original Defender New AC/DC Fan. MODEL: HM-2912. Enjoy 3.5 hours of high-speed cooling, 5.5 hours on medium, and 9 hours on low speed. LED light lasts for 90 hours. BATTERY: 6V4.5AH RECHARGEABLE SEALED LEAD-ACID BATTERY. Fan speed: 1400 rpm. Limited stock available. FEATURES: RECHARGEABLE, OVERCHARGE AND OVERDISCHARGE PROTECTION FUNCTION, AC/DC, 3-SPEED OSCILLATING FAN, EASY TO CARRY AND REPAIR. SPECIFICATION: BATTERY: 6V4.5AH RECHARGEABLE SEALED LEAD-ACID BATTERY. FAN: LOW 800 R/M, MEDIUM 1100 R/M, HIGH 1400 R/M. CHARGE TIME: 12-15 HOURS. DURATION TIME: HIGH 3.5 HOURS, MEDIUM: 5.5 HOURS, LOW 9 HOURS, LED 90 HOURS.