rechargeable fan;rechargeable fan light ;emergency fan Features: AC/DC double-duty fan and spotlights Built-in overcharging and overdischarging protective circuit Built-in AC/DC self shifting circuit Using 18 LEDs as the spotlights Fan: Using 12 inch fan blade Built-in circuit of inputing air and speed change Built-in fuse Specifications: Built-in 6V 4AH rechargeable and non-maintaining lead-acid battery. When AC power is cut off, the DC fan can use time with high speed for 4 hours, low speed for 6 hours. It can keep 70 hours for emergency lighting. Battery: The charge time is 10-12 hours.