K-001 Portable Neck-mounted Fan Air Conditioner Cooling Electric Fan USB Rechargeable Neck Warmer Fan Creating Cool Breeze and Warm Air - Blue

• Cooling and Heating 2-in1 Design - It heats in 3s and warms your neck quickly, warm up to 45?; it is also a powerful cooling fan for providing you cool breeze down to 15?
• 8 Working Modes - Easily adjust the suitable one mode to fit you 
• Comfortable Neck Hanging Design - Putting less strain on the neck, no harm to your body
• LED Display Screen - Built in a digital screen to show the temperature
• USB Rechargeable - Compatible with most USB output devices, such as power bank, adapter, car charger, laptop, computer, etc
• Low Noise - This fan will keep you cool while working and is super silent around your neck so that it doesn't disturb you with noise

Specification:

• Battery capacity: 2800mAh (KC certification)
• Product size: 164*153*54mm
• Input: 5V/2A
• Product material: environmentally friendly ABS + environmentally friendly silicone + environmentally friendly aluminum
• Rated power: 4W
• Battery life: about 3 hours
• Cooling mode levels: 25?, 21?, 18?, 15?
• Heating mode levels: 38?, 40?, 42?, 45?