SPECIFICATIONSBrand Name: APAYADOType: WiredHign-concerned Chemical: NoneOrigin: Mainland ChinaPackage: YesNumber of Buttons: 12Sensor model: Instant A826 (12800 DPI|60 IPS|20G)Style: DPI adjust buttonStyle: BacklightCertification: CEGross Weight: 150Operation Mode: Opto-electronicChoice: yes