Smart Sleep Aid Device

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Product information:Power type: USB plug-inFunction: handheld remote controlNumber of gears: 20Material: ABS stainless steelBattery capacity: 300 mACharging time: 3 hours: Battery life: 1-2 hoursCurrent: 5V1ABattery Type: polymer lithium batteryPacking list:Sleep Bracelet*1+Manual*1+Charging Cable*1 Show more