Feature:1. Made of highquality materials, and the wireless keyboard is strong, durable, light in weight, waterproof and dustproof.2. The keys of this wireless keyboard are quiet, typing fast and feel good, and are easy to operate and convenient to use.3. Portable and ultrathin, and convenient to carry on travel or business trip, and can be used with smart phones, tablet computers, laptops, and desktop computers.4. Uses a new highquality aluminum alloy back cover, and 10in widened and enlarged processing makes people have a better experience.5. Equipped with TPU silicone soft shell, builtin a pen slot, has good antidrop effect and can effectively protect the keyboard.Specification:Item Type: Wireless KeyboardBT 3.0: Standard MICR InterfaceWithin 10 Meters: Effective Operation Can Be AchievedModulation Method: GFSKWorking Voltage: 3.7VWorking Current: andlt 5.0mAStandby Current: 1.0mASleep Current: andlt 0.25mACharging Current: 200mAStandby Time: andgt 30 DaysCharging Time: andlt 2 HoursBuilt-in Lithium Battery Capacity: 200mAhSustainable Working Time: 44 HoursButton Force: 8010gButton Life: 5 Million ClicksWorking Temperature: -10-55.Package List:1 x Wireless Keyboard1 x Protective Sleeve1 x Charging CableNote:Keyboard with builtand 8209 in battery shipped