Portable Battery Fan, Rechargeable Desktop Fan, 4 Speeds, 90° Rotation, Long Working Time, Portable USB Powered Personal Fan (Dark Blue)

【Rechargeable Battery Fan】The new rechargeable small desktop fan uses 4000mah (built-in), which can run for 5-15 hours after fully charged.
【Powerful Cooling & 90° Rotation】The small desktop fan has strong and stable wind power to keep you cool. Will not interfere with your rest and work. The USB desktop fan has 90 degree rotation.
【4-Stage Adjustable Wind Speed and Quiet】4-stage easily adjust the wind speed.
【Safe and Portable】Use high quality ABS and brushless copper motor.