Features :* Quad-core ice-sensing motor, strong hurricane, cool without sweating.* Imitation aircraft turbine channel design, will not mix up hair.* There are air outlets up and down; there are two cold aluminum sheets on the back of the neck, which cools down in 3 seconds.* Lightweight design, the weight is as low as 190g, long-term wear does not tire the neck.Specification:Name: Hanging Neck FanMaterial: ABS + metalInput: DC5V/1ABattery capacity: 4000mAhCharging: USB chargingCharging time: 3 hoursUse time: 18 hoursSize: 180*195*61mmColor: blue/whitePacking included:1 x Hanging Neck FanNote:1. Due to manual measurements and slight color variations, please allow 1-3 cm (0.4-1.18 inches) difference to suit different display settings.2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.