Sleep Aid Device, Handheld Sleep Aid Instrument with Microcurrent Pulse Sleep Assist Technology for ImproveSpecification: Name: Sleep Aid Device Material: ABS Color: Blue, White, Yellow Size: One SizePackage Contents 1 x Sleep Aid DeviceNote: 1. Please kindly allow a 2-3% difference according to manual measurement. 2. Please note that a slight color difference should be acceptable due to the light and screen. Thanks.PromiseIf the product has any quality problems, please feel free to contact us, we will help you solve the problem as quickly as possible.