Feature:Instant cooling:This cooling neckband fan uses semiconductor cooling technology. The current generated by the semiconductor cooling chip creates a temperature difference and achieves instant cooling within two seconds.Portable- Soft silicone material with adjustable curved structure provides comfortable neck protection and adjusts size to unused neck circumference. The neck fan is as light and portable as a headset and is hung around the neck. The special handheld design allows you to free your hands and enjoy the cool breeze while doing what you want to do.USB rechargeable-Personal air conditioner has two built-in 1800 mAh polymer batteries, which can be charged for 1.8 hours, whether you are at work or shopping, you can last 4 or 8 hours (or different speeds).3 modes adjustable- The first mode is the breeze mode, the second is the low wind mode, and the third is the high wind mode.45 degree rotation- Our hands free small neck cooling fan designed with double fans can breeze and bring you ultra comfort. This neck band air cooler allows you to flexibly adjust the direction of 45 degrees to allow you to find the most appropriate wind direction.Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.Specification:Color: White, blackMaterial: SiliconeProduct name:neck fanBattery capacity: 1800 Mah*2Charge time: 1.8 hoursLifetime: 4-8 hoursCooling range: 6-9 degrees CelsiusCharging interface: 5v2a Micro-USBSize: 18.6*20*6cmProduct weight: 340gPackage contents: 1 * Neck cooling fanTips: you should tie your hair before using mini personal fans. If the fan cannot reach 3 speeds or can't stop, please recharge the fan.includes:1 x Neck cooling fan