3E Dual Wired/Wireless Keyboard (3E-BKY9-BB) [Basic Information] Brand: 3E Model Number: 3E-BKY9-BB Included: Stand/protective case, microUSB cable for keyboard charging & USB connection, instruction manual, box Body Size: When folded W166 x H120 x D15.8mm When in use W291 x H117 x D8.25mm Body Weight: Approximately 288g Key Pitch: 19mm Key Arrangement: English layout (78 keys) Key Durability: Approximately 3 million presses (per key) Wireless Interface: USB & Bluetooth 3.0 GFSK Charging Time: Approximately 4 hours Continuous Standby Days: Approximately 200 days Continuous Usage Time: Approximately 5 hours (with backlight) Approximately 260 hours (without backlight) Supported OS: Android 4.0 or later / iOS 9.0 or later / Windows XP or later Compatible Devices: Various Windows tablets, various Android tablets/smartphones, iPad series, iPhone series [Product Features] - 3-fold keyboard convenient for carrying, lightweight and compact design - Multi-pairing function, up to 3 devices can be connected via Bluetooth (can be switched freely during use) - Backlight function (can be switched to 3 colors) - Stand and protective case included [Other] - Operation has been confirmed. - Please note that the product color may appear slightly different depending on your monitor and settings. - There are no noticeable scratches or stains on the main body (there is a small dent on the back), but the case has fine scratches. - Please refrain from purchasing if you are sensitive to used items. - The item will be wrapped in bubble wrap and shipped in an envelope, etc.