Product size: 219.7*202.7*63 mmMaterial: ABS, PCCharging time: 2-3 hoursInput voltage: DC 5.0V MAXRated power: maximum 4WBattery capacity: 2400mAhInput current: 2.0A MAXCharging interface: dual Type-C-USBSpeed: 5000 rpmMotor: Brushless motorBattery voltage: 3.7V Comfortable hanging neck design: Ergonomic, Fits to the neck, using cured design.Type-C charging port：It comes with Type-C cable,When the battery is too low, charge through the Type-C port。Two motors, independently controlled ：Two motors on the left and right, work independently, used on one side, or used at the same time。Package Included:1 * FanOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the real item. The allowable measurement error is +/- 1-3cm.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!