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Power supply method: lithium battery Specification: one Product feature: Silent Noise: below 36dB Rated voltage: 5 Rated power: 5 Rated frequency: 1 Applicable area: 3 Air supply method: no page turning, no shaking Wind speed range: 3 levels Does it support charging? Yes, it does Shaking head method: shaking head up and down Gross weight: 145g Packaging volume: 001 Color: Y32 Rock Lime Semiconductor Ice Deposit, Y32 Snow Mountain White Semiconductor Ice Deposit Built in battery: Built in battery Built in battery capacity: 2000mAh -4000mAh Function: 5v-1A Motor type: brushless motor Number of fan blades: No fan blades Shell process: electroplating, wire drawing Battery life: 3-6 hours Fan classification: Handheld fan Net weight of product: 160g