①. Simulate healthy natural wind, dual-core silent motor, blowing strong cool wind to eliminate the summer heat. ②. LED display design, clearly monitor power consumption, convenient and fast charging. ③. The bladeless fan design prevents hair from curling, improves the ability to resist hair curling, and has an ultra-small air inlet. ④. The angle is arbitrary, the tube is very strong, the collar is made of skin-friendly silicone, and the width can be adjusted at will, which can be worn by fat or thin people. ⑤. Ultra-light weight, no heavy feeling, light and weightless, will not hurt the neck when worn for a long time, and you can enjoy the refreshing summer at ease. ⑥. Material: ABS, PP, electronic components Product size: 20*20*6CM Battery voltage: 3.7V Rated power: 3.5W Usage time: 2000mAh 3 - 10 hours Working current: Max. 5V/ 0.8 - 1A Working temperature: -10℃ to 45℃ Battery capacity: 4000mAh