Refrigeration Neck Fan - Real Cooling! Surrounding The Back Of The Top And Bottom Of The Air; Turbo Cold Air System To Send Ice Cold Air; New Energy Battery Life; Lightweight And Comfortable To Wear; Large Area Of Refrigeration, To Do 15 C In Seconds. NTC Refrigeration Technology, Superconducting Cold Aluminum Semiconductor, Feel The Cooling New Heights - Double The Cold Sensation And Feel Icy Smooth Even At 40C Outdoors. 5200mah New Energy Dual-Core Lithium Battery - Adopting The Same Type Of Battery Cell As The New Energy Sports Car, The Single Capacity Is Increased By About 45% And The Energy Density Is Increased By 30%, Which Guarantees A Long And Durable Battery Life. Wear Air-Conditioner, Cool Down Quickly, Cool Down Beyond Your Imagination - Semiconductor's First Back Airflow For Full-Body Cooling, Silent// Long-Lasting// Cool// Lightweight. 3-Speed Refrigeration Air Speed, Memory Gear Function, Turn On Again That Is Used - Neck Cooling Air Conditioner With Memory Function, The Experience Is Upgraded Again Each Time You Turn On The Power To Remember The Last Use Of The Gear, Defining Your Habits