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Product Name: Neck Fan Charging Method: 5V1A Micro USB Cable Charging Time: 4 hours at DC 5V/1A Usage Time: Approximately 4-12 hours Low Speed: 12 hours, Medium Speed: 7 hours, High Speed: 4 hours Blade Size: 68/30/mm Weight: 230g Material: ABS + Silicone Power Consumption: 0.3-1.2W Function Buttons: 1. Long press for three seconds (Power On/Off) 2. Tap the button to cycle through wind speeds 3. During operation: Blue light flashes 4. While charging: Red light is on 5. Fully charged: Blue light stays on 6. Low battery: Red light flashes