Specification: 100% brand new Color: White Material: ABS/PC/electronic component Input/output: 5V/0.8-1A the largest Rated power: 2.5W Battery voltage: 3.7V Capacity: 2000mAh (battery life of 2.5-4.5 hours) feature: Real -time power display. Bare -turbocharged, more power. Short pressing to open the first gear, two short pressing in the second gear, and three short pressure machines in the third gear. Good workmanship and good Light weight. Easy to use. easy to carry. Use durability.   notes: Due to manual measurement, please allow a little error. The color displayed in the photo may show slightly different from your computer monitor because the calibration of the monitor is different.   Package Included: 1*neck hanging fan