... OEM service available Work tapebluetooth & wirelessFeature100/% silicone material, save electricity,waterproof,dust prevention and portable.functional characteristicsKey Fn switchs over multimedia ... fabrication processing Environmental,high strength and elastic siliconeColor matchCan be choosePower switchyesUSB charging functionyesCertificatesFCC,CE,ROHS,SRRC Bluetooth keyboard with Black , white ...