The?Rechargeable FRC ?is adjustable and has battery life. It features LED Lights and also has a full charge and charging indicator light. The?rechargeable?fan features?AC and DC power supply modes and a?5 blade technology for efficient airflow.?It is adjustable and features automatic oscillation, low noise operation, and a durable motor. This fan comes with the battery disconnected from the terminal to prevent discharge before it is ready for use.This allows for a Longer battery Lifecycle ?You can watch the easy to assemble steps on our set up video.Advised to use with a Power Surge ProtectorDo not Charge without Someone to put off in event of a power outage?Rechargeable & Automatic Emergency FanDuration – 11 hours (Low Speed), 6 hours (Middle Speed), 4 hours(High Speed)DC & AC Power Supply available with high powered LED lightUSB Function3 Blade Functionality for Efficient AirflowCharging & Full Charge Indicator LightOver-discharge & Overcharge Protection3-Step Speed ControlAutomatic OscillationTouch & Tilt NeckExtra Low Noise & Durable MotorPortable Handle offers Convenient Indoor & Outdoor Use