Fantastic product designed by Taiwanese firm Moai, the G2T Electric scarf is a lightweight neck accessory that serves as a portable air cooler / heater for your active life. It's perfect for biking, skiing, jogging and also recommended for travelers, elders, hard workers and people to stay healthy and comfort. The Moai scarf has two different settings: normal mode and turbo mode. Normal Mode : ．Cooling Level: 19.8F(±3.6F) Lower than Ambient ．Heating Level: 45F(±3.6F) Higher than Ambient Power Comsumption: 1.3A, 6.5W Turbo Mode : ．Cooling Level: 27F(±3.6F) Lower than Ambient ．Heating Level: 63F(±3.6F) Higher than Ambient Power Comsumption: 1.8A, 9W Product Informations : Power : 5V DC, Micro USB Size S~M: Neck Size 10.3 - 19.7 inch Size L~XL: Neck Size 11.8 - 21.1 inch Product Net Weight : Size S~M: 373g (±1%) Size L~XL: 328g (±1%) Package Included: G2T Wearable Electric Scarf x1 USB Cable x1, Cloth Cover x1 User Manual x1 Carrying Bag x1 Manufacturer Warranty: 1 year with certain policy. **Exclusive of : Power Bank (Due to IATA policy) **Please use this product by USB plug with power bank charge all the time.