Specification: Product Name: Portable Necklace Fan(Patented item) Material: Plastic(ABS) Size: 150x45x180 mm, Weight: 195g Power: 0.3 -8W, Input: DC5V 1A Battery: 18650-3.7V Charging time: 1-3h, Working time: 1-7h Speed gear: 3 Wind speed level, Interface type: Micro Benefits: Adjustable wind direction Indicator light: Blue light flashing(working) Red light on(Charging) Red light goes out(a full charge) Key cycle function: Start - 1st gear wind - 2nd gear wind - 3rd gear wind - Power off Light Switch Short Press Cycle Function: Seven lights(Night colorful led bright) - White lights - Lights off Installation: Tabletop / Portable Application: Car, RV, Outdoor, Hotel, Garage, Commercial, Household, Home Office…